ICWES15 - The Study of two Phase Flow Wall Erosion using a Generalized Computational Fluid dynamics Prediction Model. Presented by Ms Dorina Ionescu, Johannesburg, SAfrica
Simulation and Modelling of Pipeline Corrosion and Integrity Management in Oi...ijtsrd
In this research work, Monte Carlo Simulation and degradation models were used to predict the corrosion rate and reliability of crude oil pipelines. Discrete random numbers simulated from Inline Inspection Data were used to predict the corrosion rate using Linear and Power Law Model. The mean time for failure MTFF was estimated with the degradation models. The result of the study shows that the degradation models and Monte Carlo simulation can predict the corrosion rate of the pipelines to an accuracy of between 83.05-98.33 and 84.24- 97.94 respectively. From the plot the lowest degradation recorded was 1.67 Power law and highest 16.95 Power Law , for Linear Model Law, the lowest value recorded was 2.11 while the highest is 15.23 . In comparison to the value obtained from Monte Carlo Simulation 2.01 lowest and 15.76 highest , all the values fall between 1.67 to16.95 . Thus, RMSE of between 1.67 and 16.95 was recorded for the degradation models. Therefore, the statistical models give the expected number of failures. The results of the statistical models can be used in reliability analysis, risk analysis, and optimum maintenance decisions. Nse Peter Essang "Simulation and Modelling of Pipeline Corrosion and Integrity Management in Oil and Gas Industry" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd21411.pdf
Paper URL: https://www.ijtsrd.com/engineering/gas-engineering/21411/simulation-and-modelling-of-pipeline-corrosion-and-integrity-management-in-oil-and-gas-industry/nse-peter-essang
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Simulation and Modelling of Pipeline Corrosion and Integrity Management in Oi...ijtsrd
In this research work, Monte Carlo Simulation and degradation models were used to predict the corrosion rate and reliability of crude oil pipelines. Discrete random numbers simulated from Inline Inspection Data were used to predict the corrosion rate using Linear and Power Law Model. The mean time for failure MTFF was estimated with the degradation models. The result of the study shows that the degradation models and Monte Carlo simulation can predict the corrosion rate of the pipelines to an accuracy of between 83.05-98.33 and 84.24- 97.94 respectively. From the plot the lowest degradation recorded was 1.67 Power law and highest 16.95 Power Law , for Linear Model Law, the lowest value recorded was 2.11 while the highest is 15.23 . In comparison to the value obtained from Monte Carlo Simulation 2.01 lowest and 15.76 highest , all the values fall between 1.67 to16.95 . Thus, RMSE of between 1.67 and 16.95 was recorded for the degradation models. Therefore, the statistical models give the expected number of failures. The results of the statistical models can be used in reliability analysis, risk analysis, and optimum maintenance decisions. Nse Peter Essang "Simulation and Modelling of Pipeline Corrosion and Integrity Management in Oil and Gas Industry" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd21411.pdf
Paper URL: https://www.ijtsrd.com/engineering/gas-engineering/21411/simulation-and-modelling-of-pipeline-corrosion-and-integrity-management-in-oil-and-gas-industry/nse-peter-essang
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This paper focuses on the effect of geometrical cross section between rectangular and circular shapes on the hydrodynamic focusing of a micro flow cytometer device. The effect of fluid flow ratio between the main and sheath channels on the focusing width is studied. This study has been performed using a COMSOL Multiphysics simulation tool. The results showed that focusing width decreases as the ratio between main channel and sheath channels are increased. The concentration at long-range is studied and indicated that circular shape can sustain a higher concentration at the centre along the channel compared with rectangular shape. The velocity at the cross-section of the channel-junction shows that circular shape produces higher velocity at the centre of the channel compare to that of the rectangular shape. The effect of flow ratio and geometrical shape are significantly vital for microfluidic system which utilizes hydrodynamic focusing for biological and chemical analysis. From the result, micro flow cytometer studied able to use for human body cells such as glucose, virus, red blood cells and white blood cells which have a range size of 2-120 microns.
Experimental Investigation of Erosive Wear on the High Chrome Cast Iron Impel...Sunil Kumar
Erosive wear occurs on the impeller and volute casing of the slurry disposal pump due to the impact of the ash particles on the impeller with a high velocity. Due to erosive wear, pump life become very short. The service life of centrifugal pump, handling slurry can be increased by reducing the erosive wear.
In the present work, the experimental investigation of erosive wear has been carried out on the high speed slurry erosion tester to understand the effects of the ash concentration in slurry, rotational speed of the pump impeller and ash particle size on erosive wear. The erosive wear behavior of high chrome cast iron was investigated by Response surface methodology (RSM). Analysis of variance (ANOVA) was used for statistical analysis and the modeled values for the response were obtained with the help of modeled equation. The result shows that the ash concentration in slurry and kinetic energy of the moving particles highly contributes to erosive wear of pump impeller as compared to the ash particle size.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Open channel flow velocity profiles for different reynolds numbers and roughn...eSAT Journals
Abstract A series of laboratory tests were carried out to understand the extent of effect of roughness and Reynolds number on mean velocity in both outer and inner scaling. To this end, four different types of bed surface conditions (impermeable smooth bed, impermeable rough bed, permeable sand bed and impermeable distributed roughness) and two different Reynolds number (Reh = 47,500 and 31,000) were adopted in the study. Sand particles of median diameter of 2.46 mm were used to create the roughness. The results show that the mean velocities collapsed well for different Reynolds number and for all different bed surfaces. The maximum velocity for all flow conditions were observed below some distances from the free surface. The location of maximum velocity is seen to be dependent on both of roughness and Reynolds number. The smooth bed test data agrees well with the standard log law and collapses well in viscous sub layer and overlap region. The extent of collapses is found to be dependent on Reynolds number. Friction coefficient is noted to be dependent on both the Reynolds number and roughness. Key Words: Open channel flow, Reynolds number, Roughness, mean velocity, friction coefficient, log law
Electrochemical Redox Cycling Realized by Chromatography Paper-based SensorTELKOMNIKA JOURNAL
In this work, we demonstrated that enhancement of electrochemical current due to
redox cycling could be accomplished by paper-based biosensor without any expensive microfabrication
process. The paper-based sensor had layered structure to generate higher current
than a conventional one. We took advantage of the fact that the paper thickness was
micrometer-sized (180um), and it defined the distance between two electrochemical electrodes
on both sides of the paper. Experimental results showed signatures of the redox cycling, where
the electrochemical current from low concentration molecules could be arbitrarily increased by
decreasing the distance between electrodes. Such a structure was advantageous for detecting
target molecules at very low concentration, proposing a low-cost highly-sensitive biochemcal
sensor.
Today, retrofitting of the old structures is important. For this purpose, determination of capacities for these buildings, which mostly are non-ductile, is a very useful tool. In this context, non-ductile RC joint in concrete structures, as one of the most important elements in these buildings are considered, and the shear capacity, especially for retrofitting goals can be very beneficial. In this paper, three famous soft computing methods including artificial neural networks (ANN), adaptive neuro-fuzzy inference system (ANFIS) and also group method of data handling (GMDH) were used to estimating the shear capacity for this type of RC joints. A set of experimental data which were a failure in joint are collected, and first, the effective parameters were identified. Based on these parameters, predictive models are presented in detail and compare with each other. The results showed that the considered soft computing techniques are very good capabilities to determine the shear capacity.
The deposition of the flow of suspended particles has always been a problematic case in the process of flow transmission through sewers. Deposition of suspended materials decreases transmitting capacity. Therefore, it is necessary to have a method capable of precisely evaluating the flow velocity in order to prevent deposition. In this paper, using Gene-Expression Programming, a model is presented which properly predicts sediment transport in the sewer. In order to present Gene-Expression Programming model, firstly parameters which are effective on velocity are surveyed and considering every of them, six different models are presented. Among the presented models the best is being selected. The results show that using verification criteria, the presented model presents the results as Root Mean Squared Error, RMSE=0.12 and Mean Average Percentage Error, MAPE=2.56 for train and RMSE=0.14 and MAPE=2.82 for verification. Also, the model presented in this study was compared with the other existing sediment transport equations which were obtained using nonlinear regression analysis.
Moisture penetration causes many direct and indirect distresses in flexible asphalt pavement. Due to damage in asphalt concrete and binder by moisture are the prime concern of failure for flexible pavement worldwide. The causes and prediction are investigated in this study. The asphalt binder was modified with carbon nanotubes (CNT) with very small percentages. The modified binder was simulated with moisture damage with AASHTO T-283 methods. In this study, polymer and carbon nanotubes (CNT) have been added to liquid asphalt binder to examine whether the resulting modified binder has improved moisture damage resistance. Using laboratory tested data, an artificial intelligence modeling technique has been utilized to determine the moisture damage behavior of the modified binder. Multi-Layer Perceptron (MLP) provides the best prediction for wet and dry samples AFM readings with R2 values respectively 0.6407 and 0.8371.
Modeling of Dirac voltage for highly p-doped graphene field-effect transistor...journalBEEI
In this paper, the modeling approach of Dirac voltage extraction of highly p-doped graphene field-effect transistor (GFET) measured at atmospheric pressure is presented. The difference of measurement results between atmospheric and vacuum pressures was analyzed. This work was started with actual wafer-scale fabrication of GFET with the purposes of getting functional device and good contact of metal/graphene interface. The output and transfer characteristic curves were measured accordingly to support on GFET functionality and suitability of presented wafer fabrication flow. The Dirac voltage was derived based on the measured output characteristic curve using ambipolar virtual source model parameter extraction methodology. The circuit-level simulation using frequency doubler circuit shows the importance of accurate Dirac voltage value to the device practicality towards design integration.
Prioritization of watershed has picked up significance in watershed management. Morphometic analysis is been commonly applied to prioritize the watershed. In the present study two mini watersheds in Raichur city have been considered Mini-watershed 1 with an area of 519.32 km2 with highest order stream of 6 Mini -Watershed 2 with an area of 360.97 km2 with highest order stream of 5. There are Seven Subwatersheds in both the Mini-watersheds. Various morphometric parameters namely Bifurcation ratio(Rb), Drainage density(Dd), Stream frequency(Ns), Texture ratio(T), Form factor(Rf), Circularity ratio(Rc), Elongation Ratio(Re), length of overland flow, shape factor(Bs), compactness ratio (Cc) has been determined for each subwatershed and allotted position on premise of relationship as to arrive at a Compound value for final ranking of subwatershed. The morphometric parameters ranges between Rb (2.95-5.50), Dd (1.218-1.373), Ns (0.890-1.182), T (0.731-1.590), Rf (0.230-0.850), Rc (0.246-0.500), Re (0.55-1.04), Cc (1.40-1.83), Lof (0.364-0.411), and Bs (1.17-4.20). It is found that in Mini-watershed 1 50.87% of area falls under Very high Priority category 32.94% under high, 8.96% under medium and 7.23% under very low priority category and in Mini-watershed 2 20.34% of area falls under very high, 19.82% under high and 59.84% under medium priority category.
Review on the Effect of Corrugated Shapes on the BEHAVIOURS of Fluidjournal ijrtem
Abstract: Corrugated pipe are pipes with rough surfaces walls of discrete grooves regularly disposed along the flow direction. Surface roughness has a significant effect on a wide range of engineering systems such as industrial piping systems, open channel flows, turbo machines, marine, vehicles, and aircraft etc. The d-types and k-type of the roughness were studies and their effect on the flow properties of fluid. Both experimental and numerical analyses of different researchers were reviewed. The rough patterns and results of the researchers were compared. The surface roughness contributed to turbulence, friction loss and enhanced heat transfer depending on the geometrical shape.
Piping systems associated with production, transporting oil & gas, water/gas injection into reservoirs, experience wear & tear with time & operations. There would be metal loss due to erosion, erosion-corrosion and cavitation to name a few. The presence of corrosion defects provides a means for localized fractures to propagate causing pipe ruptures & leakages. This also reduces the pipe/pipeline maximum allowable operating pressure [MAOP].
The following document covers methods by DNV standards to quantitatively estimate the erosion rate for ductile pipes and bends due to the presence of sand. It is to be noted that corrosion can occur in many other scenarios such as pipe dimensioning, flow rate limitations, pipe performance such as pressure drop, vibrations, noise, insulation, hydrate formation and removal, severe slug flow, terrain slugging and also upheaval buckling. However these aspects are not covered in this document.
Based on the erosional rates of pipes and bends, the Maximum Safe Pressure/Revised MAOP is evaluated based on a Level 1 Assessment procedure for the remaining strength of the pipeline. The Level 1 procedures taken up in this tutorial are RSTRENG 085dL method, DNVGL RP F-101 (Part-B) and PETROBRAS’s PB Equation.
This paper focuses on the effect of geometrical cross section between rectangular and circular shapes on the hydrodynamic focusing of a micro flow cytometer device. The effect of fluid flow ratio between the main and sheath channels on the focusing width is studied. This study has been performed using a COMSOL Multiphysics simulation tool. The results showed that focusing width decreases as the ratio between main channel and sheath channels are increased. The concentration at long-range is studied and indicated that circular shape can sustain a higher concentration at the centre along the channel compared with rectangular shape. The velocity at the cross-section of the channel-junction shows that circular shape produces higher velocity at the centre of the channel compare to that of the rectangular shape. The effect of flow ratio and geometrical shape are significantly vital for microfluidic system which utilizes hydrodynamic focusing for biological and chemical analysis. From the result, micro flow cytometer studied able to use for human body cells such as glucose, virus, red blood cells and white blood cells which have a range size of 2-120 microns.
Experimental Investigation of Erosive Wear on the High Chrome Cast Iron Impel...Sunil Kumar
Erosive wear occurs on the impeller and volute casing of the slurry disposal pump due to the impact of the ash particles on the impeller with a high velocity. Due to erosive wear, pump life become very short. The service life of centrifugal pump, handling slurry can be increased by reducing the erosive wear.
In the present work, the experimental investigation of erosive wear has been carried out on the high speed slurry erosion tester to understand the effects of the ash concentration in slurry, rotational speed of the pump impeller and ash particle size on erosive wear. The erosive wear behavior of high chrome cast iron was investigated by Response surface methodology (RSM). Analysis of variance (ANOVA) was used for statistical analysis and the modeled values for the response were obtained with the help of modeled equation. The result shows that the ash concentration in slurry and kinetic energy of the moving particles highly contributes to erosive wear of pump impeller as compared to the ash particle size.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Open channel flow velocity profiles for different reynolds numbers and roughn...eSAT Journals
Abstract A series of laboratory tests were carried out to understand the extent of effect of roughness and Reynolds number on mean velocity in both outer and inner scaling. To this end, four different types of bed surface conditions (impermeable smooth bed, impermeable rough bed, permeable sand bed and impermeable distributed roughness) and two different Reynolds number (Reh = 47,500 and 31,000) were adopted in the study. Sand particles of median diameter of 2.46 mm were used to create the roughness. The results show that the mean velocities collapsed well for different Reynolds number and for all different bed surfaces. The maximum velocity for all flow conditions were observed below some distances from the free surface. The location of maximum velocity is seen to be dependent on both of roughness and Reynolds number. The smooth bed test data agrees well with the standard log law and collapses well in viscous sub layer and overlap region. The extent of collapses is found to be dependent on Reynolds number. Friction coefficient is noted to be dependent on both the Reynolds number and roughness. Key Words: Open channel flow, Reynolds number, Roughness, mean velocity, friction coefficient, log law
Electrochemical Redox Cycling Realized by Chromatography Paper-based SensorTELKOMNIKA JOURNAL
In this work, we demonstrated that enhancement of electrochemical current due to
redox cycling could be accomplished by paper-based biosensor without any expensive microfabrication
process. The paper-based sensor had layered structure to generate higher current
than a conventional one. We took advantage of the fact that the paper thickness was
micrometer-sized (180um), and it defined the distance between two electrochemical electrodes
on both sides of the paper. Experimental results showed signatures of the redox cycling, where
the electrochemical current from low concentration molecules could be arbitrarily increased by
decreasing the distance between electrodes. Such a structure was advantageous for detecting
target molecules at very low concentration, proposing a low-cost highly-sensitive biochemcal
sensor.
Today, retrofitting of the old structures is important. For this purpose, determination of capacities for these buildings, which mostly are non-ductile, is a very useful tool. In this context, non-ductile RC joint in concrete structures, as one of the most important elements in these buildings are considered, and the shear capacity, especially for retrofitting goals can be very beneficial. In this paper, three famous soft computing methods including artificial neural networks (ANN), adaptive neuro-fuzzy inference system (ANFIS) and also group method of data handling (GMDH) were used to estimating the shear capacity for this type of RC joints. A set of experimental data which were a failure in joint are collected, and first, the effective parameters were identified. Based on these parameters, predictive models are presented in detail and compare with each other. The results showed that the considered soft computing techniques are very good capabilities to determine the shear capacity.
The deposition of the flow of suspended particles has always been a problematic case in the process of flow transmission through sewers. Deposition of suspended materials decreases transmitting capacity. Therefore, it is necessary to have a method capable of precisely evaluating the flow velocity in order to prevent deposition. In this paper, using Gene-Expression Programming, a model is presented which properly predicts sediment transport in the sewer. In order to present Gene-Expression Programming model, firstly parameters which are effective on velocity are surveyed and considering every of them, six different models are presented. Among the presented models the best is being selected. The results show that using verification criteria, the presented model presents the results as Root Mean Squared Error, RMSE=0.12 and Mean Average Percentage Error, MAPE=2.56 for train and RMSE=0.14 and MAPE=2.82 for verification. Also, the model presented in this study was compared with the other existing sediment transport equations which were obtained using nonlinear regression analysis.
Moisture penetration causes many direct and indirect distresses in flexible asphalt pavement. Due to damage in asphalt concrete and binder by moisture are the prime concern of failure for flexible pavement worldwide. The causes and prediction are investigated in this study. The asphalt binder was modified with carbon nanotubes (CNT) with very small percentages. The modified binder was simulated with moisture damage with AASHTO T-283 methods. In this study, polymer and carbon nanotubes (CNT) have been added to liquid asphalt binder to examine whether the resulting modified binder has improved moisture damage resistance. Using laboratory tested data, an artificial intelligence modeling technique has been utilized to determine the moisture damage behavior of the modified binder. Multi-Layer Perceptron (MLP) provides the best prediction for wet and dry samples AFM readings with R2 values respectively 0.6407 and 0.8371.
Modeling of Dirac voltage for highly p-doped graphene field-effect transistor...journalBEEI
In this paper, the modeling approach of Dirac voltage extraction of highly p-doped graphene field-effect transistor (GFET) measured at atmospheric pressure is presented. The difference of measurement results between atmospheric and vacuum pressures was analyzed. This work was started with actual wafer-scale fabrication of GFET with the purposes of getting functional device and good contact of metal/graphene interface. The output and transfer characteristic curves were measured accordingly to support on GFET functionality and suitability of presented wafer fabrication flow. The Dirac voltage was derived based on the measured output characteristic curve using ambipolar virtual source model parameter extraction methodology. The circuit-level simulation using frequency doubler circuit shows the importance of accurate Dirac voltage value to the device practicality towards design integration.
Prioritization of watershed has picked up significance in watershed management. Morphometic analysis is been commonly applied to prioritize the watershed. In the present study two mini watersheds in Raichur city have been considered Mini-watershed 1 with an area of 519.32 km2 with highest order stream of 6 Mini -Watershed 2 with an area of 360.97 km2 with highest order stream of 5. There are Seven Subwatersheds in both the Mini-watersheds. Various morphometric parameters namely Bifurcation ratio(Rb), Drainage density(Dd), Stream frequency(Ns), Texture ratio(T), Form factor(Rf), Circularity ratio(Rc), Elongation Ratio(Re), length of overland flow, shape factor(Bs), compactness ratio (Cc) has been determined for each subwatershed and allotted position on premise of relationship as to arrive at a Compound value for final ranking of subwatershed. The morphometric parameters ranges between Rb (2.95-5.50), Dd (1.218-1.373), Ns (0.890-1.182), T (0.731-1.590), Rf (0.230-0.850), Rc (0.246-0.500), Re (0.55-1.04), Cc (1.40-1.83), Lof (0.364-0.411), and Bs (1.17-4.20). It is found that in Mini-watershed 1 50.87% of area falls under Very high Priority category 32.94% under high, 8.96% under medium and 7.23% under very low priority category and in Mini-watershed 2 20.34% of area falls under very high, 19.82% under high and 59.84% under medium priority category.
Review on the Effect of Corrugated Shapes on the BEHAVIOURS of Fluidjournal ijrtem
Abstract: Corrugated pipe are pipes with rough surfaces walls of discrete grooves regularly disposed along the flow direction. Surface roughness has a significant effect on a wide range of engineering systems such as industrial piping systems, open channel flows, turbo machines, marine, vehicles, and aircraft etc. The d-types and k-type of the roughness were studies and their effect on the flow properties of fluid. Both experimental and numerical analyses of different researchers were reviewed. The rough patterns and results of the researchers were compared. The surface roughness contributed to turbulence, friction loss and enhanced heat transfer depending on the geometrical shape.
Similar to ICWES15 - The Study of two Phase Flow Wall Erosion using a Generalized Computational Fluid dynamics Prediction Model. Presented by Ms Dorina Ionescu, Johannesburg, SAfrica
Piping systems associated with production, transporting oil & gas, water/gas injection into reservoirs, experience wear & tear with time & operations. There would be metal loss due to erosion, erosion-corrosion and cavitation to name a few. The presence of corrosion defects provides a means for localized fractures to propagate causing pipe ruptures & leakages. This also reduces the pipe/pipeline maximum allowable operating pressure [MAOP].
The following document covers methods by DNV standards to quantitatively estimate the erosion rate for ductile pipes and bends due to the presence of sand. It is to be noted that corrosion can occur in many other scenarios such as pipe dimensioning, flow rate limitations, pipe performance such as pressure drop, vibrations, noise, insulation, hydrate formation and removal, severe slug flow, terrain slugging and also upheaval buckling. However these aspects are not covered in this document.
Based on the erosional rates of pipes and bends, the Maximum Safe Pressure/Revised MAOP is evaluated based on a Level 1 Assessment procedure for the remaining strength of the pipeline. The Level 1 procedures taken up in this tutorial are RSTRENG 085dL method, DNVGL RP F-101 (Part-B) and PETROBRAS’s PB Equation.
Design Optimization and Development in Air Pollution Control DeviceIJERA Editor
Electrostatic Precipitators (ESP) is the device used to remove the dust particles from the processed gases coming out of boilers in cement industries, and iron core industries. There are many governing factors that affect the efficiency from that one major reason is to fully filled hopper. When hopper fills 70 % of its full limit the precipitation process stopped of that particular hopper. For remedy dust removal efficiency is increased by hopper vibrator at the time of emptying bagasse ash from the hopper. The maximum displacement is getting by using different hopper wall thicknesses, stiffener spacing as well as different configuration vibrators. Due to minimum time to complete project there are many difficulties to test at every stage to improve the design and this results in increased project cost. For this situation there is one simple way to improve the design of equipment’s through simulation in ANSYS and validation by actual physical measurements. This project presents FEA approach for modeling and analysis the hopper of electrostatic precipitator using Static, Modal and Harmonic analysis. Actual model testing is done for the validation of results. The results coming out from the FEA analysis and testing are discussed.
Impact of Crack Length into Pipe Conveying Fluid Utilizing Fast Fourier trans...IJECEIAES
One of the most prominent problems experienced by the oil facilities is leakage of oil from the pipes. This problem caused 55% of oil refineries to be shut off. Oil leakage is a common problem that often results in oil waste, damage, and hazard to public health. Therefore, it is necessary to use Modern technologies to reduce this phenomenon and avoid them in advance. Pipes that convey fluids have many uses in various industries and living facilities. Risk increases when the fluid inside the pipe is flammable. In this work, main case that cause damage to the pipe, longitudinal crack is investigate.This work presents a new experimental model based on computer applications with a Fast Fourier transform (FFT) algorithm for testing the effect of longitudinal crack length by frequency and ultrasonic measurements to measure fluid velocity. The method is used for plastic pipe with 2 cm internal diameter, 3 cm external diameter, and 1 m length. The modulus of elasticity of the material is 800 N/mm2 according to the ISO 178 test method. The pipe conveys oil with simply supported ends. The results show that FFT model shows better features compared with other ways that depends on visual inspection or localized measurements which gave an external perception of pipeline damage. FFT model offers a reliable and cheap style for ensuring pipeline integrity and warning the risks before its occurrence. From the observations made the fundamental natural frequency (FNF) decreases by increasing of crack length in the pipe that conveys fluid.
Effect of height of triangular siil on the performance of stilling basin modeleSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This experimental work aims at presenting load-deflection expressions for the
concrete beams that reinforced with three different reinforcement ratios of ACI 318-
14, which are minimum, maximum and the average of them. Three groups of beams
were cast, each group contained three beam specimens. Three types of loading are
used, 1-concentrated force, 2-concentrated forces and partial uniformly distributed
load. It is also seen that, when reinforcing ratio increases from minimum to
maximum, in case of 1-concentrated force, ultimate capacity increases by about 280%
and deflection decreases by about 33%, respectively. Whereas, in case of 2-
concentrated forces, ultimate capacity increases by about 258% and deflection
decreases by about 50%, respectively. Finally, in case of uniformly distributed load,
ultimate capacity increases by about 289% and deflection decreases by about 28%,
respectively.
This experimental work aims at presenting load-deflection expressions for the concrete beams that reinforced with three different reinforcement ratios of ACI 318-14, which are minimum, maximum and the average of them. Three groups of beams were cast, each group contained three beam specimens. Three types of loading are used, 1-concentrated force, 2-concentrated forces and partial uniformly distributed load. It is also seen that, when reinforcing ratio increases from minimum to maximum, in case of 1-concentrated force, ultimate capacity increases by about 280% and deflection decreases by about 33%, respectively. Whereas, in case of 2-concentrated forces, ultimate capacity increases by about 258% and deflection decreases by about 50%, respectively. Finally, in case of uniformly distributed load, ultimate capacity increases by about 289% and deflection decreases by about 28%, respectively.
This experimental work aims at presenting load-deflection expressions for the
concrete beams that reinforced with three different reinforcement ratios of ACI 318-
14, which are minimum, maximum and the average of them. Three groups of beams
were cast, each group contained three beam specimens. Three types of loading are
used, 1-concentrated force, 2-concentrated forces and partial uniformly distributed
load. It is also seen that, when reinforcing ratio increases from minimum to
maximum, in case of 1-concentrated force, ultimate capacity increases by about 280%
and deflection decreases by about 33%, respectively. Whereas, in case of 2-
concentrated forces, ultimate capacity increases by about 258% and deflection
decreases by about 50%, respectively. Finally, in case of uniformly distributed load,
ultimate capacity increases by about 289% and deflection decreases by about 28%,
respectively.
IJCER (www.ijceronline.com) International Journal of computational Engineerin...ijceronline
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Diffuser in Steam Vent Silencer By Using Computational Fluid DynamicsIJERA Editor
Recently, research on new techniques for noise reduction of steam vent silencer has been addressed. However,
research work on shape optimization of steam vent silencer along with work on pressure drop has been sorely
neglected. Therefore, a numerical simulation has been investigated on the pressure drop using steam vent
silencer is introduced in this research work. This emphasizes the variation of pressure drop with the influence of
holes with various geometries like circular holes, square holes and square extrusion in pressurized inlet diffuser.
The sensitivity of pressure drop is less in square extrusion, compared to all other geometry. So it can conclude
that shape optimization of pressurized inlet diffuser in steam vent silencer is obtained with the application of
square extrusion.
This study aims to investigate the effect of single cavity when it presence at a
specific location within the homogenous soil, on the behavior of seepage and uplift
pressure under a hydraulic structure. The results are analyzed to introduce
deterministic formulae for calculating the amount of seepage and the uplift pressure
head. The work was done in three stages by using experimental investigation; the first
stage includes 36 models of 75mm in diameter cavity, while the second and the third
stages includes eight models for each with 100mm and 34mm diameter of cavity,
respectively. The results shows that, when the cavity presence at the left side its impact
was positive on the seepage behavior. While the influence was changed to a negative
impact when the cavity presence at the right side, except at some specific locations. The
statistical software has been employed to generate the two deterministic formulae, and
the results of multiple regressions are checked by statistical indices for the purpose of
recognizing the reliability of the proposed formulae.
An experimental study on the airlift packed column with adjustable heightIAEME Publication
Similar to ICWES15 - The Study of two Phase Flow Wall Erosion using a Generalized Computational Fluid dynamics Prediction Model. Presented by Ms Dorina Ionescu, Johannesburg, SAfrica (20)
Looking to the past to understand the future
To understand fully the future direction of the oil and gas sector here in WA, it is important to consider and recognise the recent history and current challenges being experienced. This history and current challenges formed the first section of the presentation highlighting the scale of expansion of the industry here over the past decade, where we have moved from around 20mtpa LNG to a anticipated output level of some 50mtpa in WA alone, which, when combined with the additional capacity being constructed in QLD and NT will make Australia the world’s largest exporter of LNG by the end of this decade.
Speaker: Dr Jinzhu Xia, Head Consultant, Marine, Granherne, Australia
Date: Tuesday, 6 March 2012
Hosted by: WA Oil & Gas Facilities Group a co-venture between Engineers Australia and the Society of Petroleum Engineers (SPE)
The EPCM of writing tenders: How engineers can successfully build compelling ...Engineers Australia
Date: Tuesday, 7 February 2012
Presenters: David Lunn BEng, MBA and Nigel Dennis BEng, MBA, GAICD Joint owners and directors of Bid Write Pty Ltd
Hosted by: WA Oil & Gas Facilities Group a co-venture between Engineers Australia and the Society of Petroleum Engineers (SPE)
UiPath Test Automation using UiPath Test Suite series, part 6DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Essentials of Automations: The Art of Triggers and Actions in FMESafe Software
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AIVladimir Iglovikov, Ph.D.
Presented by Vladimir Iglovikov:
- https://www.linkedin.com/in/iglovikov/
- https://x.com/viglovikov
- https://www.instagram.com/ternaus/
This presentation delves into the journey of Albumentations.ai, a highly successful open-source library for data augmentation.
Created out of a necessity for superior performance in Kaggle competitions, Albumentations has grown to become a widely used tool among data scientists and machine learning practitioners.
This case study covers various aspects, including:
People: The contributors and community that have supported Albumentations.
Metrics: The success indicators such as downloads, daily active users, GitHub stars, and financial contributions.
Challenges: The hurdles in monetizing open-source projects and measuring user engagement.
Development Practices: Best practices for creating, maintaining, and scaling open-source libraries, including code hygiene, CI/CD, and fast iteration.
Community Building: Strategies for making adoption easy, iterating quickly, and fostering a vibrant, engaged community.
Marketing: Both online and offline marketing tactics, focusing on real, impactful interactions and collaborations.
Mental Health: Maintaining balance and not feeling pressured by user demands.
Key insights include the importance of automation, making the adoption process seamless, and leveraging offline interactions for marketing. The presentation also emphasizes the need for continuous small improvements and building a friendly, inclusive community that contributes to the project's growth.
Vladimir Iglovikov brings his extensive experience as a Kaggle Grandmaster, ex-Staff ML Engineer at Lyft, sharing valuable lessons and practical advice for anyone looking to enhance the adoption of their open-source projects.
Explore more about Albumentations and join the community at:
GitHub: https://github.com/albumentations-team/albumentations
Website: https://albumentations.ai/
LinkedIn: https://www.linkedin.com/company/100504475
Twitter: https://x.com/albumentations
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
zkStudyClub - Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex ProofsAlex Pruden
This paper presents Reef, a system for generating publicly verifiable succinct non-interactive zero-knowledge proofs that a committed document matches or does not match a regular expression. We describe applications such as proving the strength of passwords, the provenance of email despite redactions, the validity of oblivious DNS queries, and the existence of mutations in DNA. Reef supports the Perl Compatible Regular Expression syntax, including wildcards, alternation, ranges, capture groups, Kleene star, negations, and lookarounds. Reef introduces a new type of automata, Skipping Alternating Finite Automata (SAFA), that skips irrelevant parts of a document when producing proofs without undermining soundness, and instantiates SAFA with a lookup argument. Our experimental evaluation confirms that Reef can generate proofs for documents with 32M characters; the proofs are small and cheap to verify (under a second).
Paper: https://eprint.iacr.org/2023/1886
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
ICWES15 - The Study of two Phase Flow Wall Erosion using a Generalized Computational Fluid dynamics Prediction Model. Presented by Ms Dorina Ionescu, Johannesburg, SAfrica
1. THE STUDY OF TWO PHASE FLOW WALL EROSION USING A GENERALIZED COMPUTATIONAL FLUID DYNAMIC MODEL Dorina Ionescu Department of Mechanical Engineering Technology Faulty of Engineering; South Africa