Simulation of Tracer Injection from a Well in a Nearly Radial Flow

•Download as PPSX, PDF•

0 likes•31 views

This is a result of Simulation of Tracer Injection from a well in a nearly radial flow using finite difference and particle tracking Radom walks. To observe the animation of the plume progress in time, one has to download the file.

Environment

Simulation of Tracer
Injection from a Well in
a Nearly Radial Flow
Amro Elfeki, PhD

Simulation of Tracer Injection from a Well in a Nearly Radial Flow

Estimation of the infiltration/natural recharge to groundwater from rainfall is an important issue in hydrology, particularly in arid regions. This paper proposes the application of The Natural Resources Conservation Service (NRCS) mass balance model to develop infiltration (F)–rainfall (P) relationship from flash flood events. Moreover, the NRCS method is compared with the rational and the Ф-index methods to investigate the discrepancies between these methods. The methods have been applied to five gauged basins and their 19 sub-basins (representative basins with detailed measurements) in the southwestern part of Saudi Arabia with 161 storms recorded in 4 years. The F–P relationships developed in this study based on NRCS method are: F = 39% P with R2 = 0.932 for the initial abstraction factor, λ = 0.2. However, F = 77% P with R2 = 0.986 for λ = 0.01. The model at λ = 0.01 is the best to fit the data, therefore, it is recommended to use the formula at λ = 0.01. The results show that the NRCS model is appropriate for the estimation of the F–P relationships in arid regions when compared with the rational and the Ф index methods. The latter overestimates the infiltration because they do not take λ into account. There is no significant difference between F–P relationships at different time scales. This helps the prediction of infiltration rates for aquifer recharge at ungauged basins from monthly and annual rainfall data with a single formula.

Basics of Contaminant Transport in Aquifers (Lecture)

Amro Elfeki

Well Hydraulics (Lecture 1)

Amro Elfeki

Gradually Varied Flow in Open Channel

Amro Elfeki

Two Dimensional Flood Inundation Modelling In Urban Area Using WMS, HEC-RAS a...

Amro Elfeki

This research presents a two-dimensional flood inundation modelling in urbanized areas when some features such as roads, buildings, and fences have great effect on flood propagation. Wadi Qows located in Jeddah City, Saudi Arabia was chosen as case study area because of the flood occurrence of 2009 causing lots of losses either economic or loss of life. The WMS and HEC-RAS program were used for a hydraulic simulation based on channel geometry built by incorporating urban features into DEM using GIS effectively. A resampling method of DEM 90 × 90 m become 10 × 10 m grid cell sizes was conducted to produce a higher resolution DEM suitable for urban flood inundation modelling. The results show that a higher resolution leads to increasing the average flood depth and decreasing the flood extent. Although the change of the grid cell sizes does not affect its elevation values, this approach is helpful to perform flood simulations in urban areas when high resolution DEM availability is limited. In addition, the integration of WMS, HEC-RAS and GIS are powerful tools for flood modelling in rural, mountainous and urban areas. https://www.researchgate.net/publication/330004725_Two_Dimensional_Flood_Inundation_Modelling_in_Urban_Areas_Using_WMS_HEC-RAS_and_GIS_Case_Study_in_Jeddah_City_Saudi_Arabia_IEREK_Interdisciplinary_Series_for_Sustainable_Development

Lecture 6: Stochastic Hydrology (Estimation Problem-Kriging-, Conditional Sim...

Amro Elfeki

Lecture 5: Stochastic Hydrology

Amro Elfeki

Lecture 4: Stochastic Hydrology (Site Characterization)

Amro Elfeki

Risk indices and risk matrix have been used among governmental agencies for assessing risks and ranking alternatives protection measures. The popularity of risk matrices can be associated with its characteristics to quick assessing risk and providing inexpensive solutions. The risk assessment is associated with flood protection as: economic, environmental, and life-safety. Economic risks are reasonably well dealt with by the well-known traditional cost-benefit analysis, insurance, and financial markets. Environmental risks are difficult to assess by traditional methods in flood project evaluation. Environmental consequences cannot be directly measured, while social risks represent the most challenge to quantify. It may be possible to estimate the number of fatalities, and cost of damaged infrastructures, while the social aspects cannot be measured. This paper is proposing a flood risk matrix technique for assessing risks in urban arid and extreme arid regions demonstrated through case-study application on the catchment of Taibah University (TU) and Islamic University (IU) in Medina, KSA. The study focused on assessing the geographical impacts of the flash flood inundated depths for different frequencies from 5 to 100 years return periods leading to identification of the flood channels, and its floodplains that may be vulnerable to different degrees of flood hazards.

Soft Computing and Simulation in Water Resources: Chapter 1 introduction

Amro Elfeki

Derivation of unit hydrograph of Al-Lith basin in the south west of saudi ar...

Amro Elfeki

Mohammad Albishi, Jarbou Bahrawi and Amro Elfeki (2016). Derivation of the Unit Hydrograph of Allith Basin in the South West of Saudi Arabia. 7 International Conference on Water Resources and the Arid Environments (ICWRAE 7): 621-628 4-6 December 2016, Riyadh, Saudi Arabia. Abstract: Most studies on unit hydrograph theory is developed for temperate regions and to the best of the authors’ knowledge, there is no studies on this topic in arid regions because of the lack of runoff measurements. This paper presents the derivation of a unit hydrograph of a Allith basin and its S-curve in the south western part of Saudi Arabia to be used to predict flash flood more accurately in this region. The derivation is based on the method of stream flow data that has been collected from measured rainfall and runoff storms in the region. The study resulted in the unit hydrograph of 1 hr duration and the S-curve that is used to transfer the hydrograph to any other durations. This unit hydrograph can be used to predict flash floods in Allith basin and similar watersheds.

Empirical equations for flood analysis in arid zones

Amro Elfeki

Simulation of the central limit theorem

Amro Elfeki

Empirical equations for estimation of transmission losses

Amro Elfeki

Transmission losses is caused by infiltration into the streambed in ephemeral streams. The conventional methods for flood routing in wadis is impossible to achieve due to transmission losses. The Muskingum routing procedure in its basic form has two parameters, the channel time lag, Km, and the weighting parameter, x. However, both parameters do not consider transmission losses of floods in channels. O’Donnell 1985 introduced a third parameter, α, in the continuity equation to allow for the lateral movement of floodwater. Elfeki et. Al (2014) carry some modifications of the assumptions such that the negative sign of the parameter α represents transmission losses. In this research, the third-parameter α has been investigated as a tool for estimation of transmission losses using data from Yiba catchment in the Kingdom of Saudi Arabia. A spreadsheet model will be developed to deduce the equations. Proceedings of the Second International Symposium on Flash Floods in Wadi Systems: Disaster Risk Reduction and Water Harvesting in the Arab Region (2016): 166-170

Representative elementary volume (rev) in porous

Amro Elfeki

Civil Engineering Drawings (Collection of Sheets)

Geohydrology ii (3)

Geohydrology ii (2)

Geohydrology ii (1)

Merging Heterogeneous Structures at Various Scales by Way of Tree-indexed Mar...

Amro Elfeki

Modeling Adsorption Kinetics of Chemically Interactive Porous Sediments by a ...

Amro Elfeki

New Approach for Groundwater Detection Monitoring at Landfills.

Amro Elfeki

Modeling Subsurface Heterogeneity by Coupled Markov Chains: Directional Depen...

Amro Elfeki

Prediction of Contaminant Plumes (Shapes, Spatial Moments and Macro-dispersio...

Amro Elfeki

Reducing Concentration Uncertainty Using the Coupled Markov Chain Approach

Amro Elfeki

ppt on beauty of the nature by Palak.pptx

RaniJaiswal16

"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...

MMariSelvam4

The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet. Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies. By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet. In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.

Recently uploaded

ppt on beauty of the nature by Palak.pptx

RaniJaiswal16

"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...

MMariSelvam4

Alert-driven Community-based Forest monitoring: A case of the Peruvian Amazon

CIFOR-ICRAF

Bhopal Gas Leak Tragedy - A Night of death

upasana742003

IPCC Vice Chair Ladislaus Change Central Asia Climate Change Conference 27 Ma...

ipcc-media

NRW Board Paper - DRAFT NRW Recreation Strategy

Robin Grant

Navigating the complex landscape of AI governance

Piermenotti Mauro

International+e-Commerce+Platform-www.cfye-commerce.shop

laozhuseo02

AGRICULTURE Hydrophonic FERTILISER PPT.pptx

BanitaDsouza

UNDERSTANDING WHAT GREEN WASHING IS!.pdf

JulietMogola

Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.

Natural farming @ Dr. Siddhartha S. Jena.pptx

sidjena70

Characterization and the Kinetics of drying at the drying oven and with micro...

Open Access Research Paper

The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.

Artificial Reefs by Kuddle Life Foundation - May 2024

punit537210

Situated in Pondicherry, India, Kuddle Life Foundation is a charitable, non-profit and non-governmental organization (NGO) dedicated to improving the living standards of coastal communities and simultaneously placing a strong emphasis on the protection of marine ecosystems. One of the key areas we work in is Artificial Reefs. This presentation captures our journey so far and our learnings. We hope you get as excited about marine conservation and artificial reefs as we are. Please visit our website: https://kuddlelife.org Our Instagram channel: @kuddlelifefoundation Our Linkedin Page: https://www.linkedin.com/company/kuddlelifefoundation/ and write to us if you have any questions: info@kuddlelife.org

Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Ventures

greendigital

Willie Nelson is a name that resonates within the world of music and entertainment. Known for his unique voice, and masterful guitar skills. and an extraordinary career spanning several decades. Nelson has become a legend in the country music scene. But, his influence extends far beyond the realm of music. with ventures in acting, writing, activism, and business. This comprehensive article delves into Willie Nelson net worth. exploring the various facets of his career that have contributed to his large fortune. Follow us on: Pinterest Introduction Willie Nelson net worth is a testament to his enduring influence and success in many fields. Born on April 29, 1933, in Abbott, Texas. Nelson's journey from a humble beginning to becoming one of the most iconic figures in American music is nothing short of inspirational. His net worth, which estimated to be around $25 million as of 2024. reflects a career that is as diverse as it is prolific. Early Life and Musical Beginnings Humble Origins Willie Hugh Nelson was born during the Great Depression. a time of significant economic hardship in the United States. Raised by his grandparents. Nelson found solace and inspiration in music from an early age. His grandmother taught him to play the guitar. setting the stage for what would become an illustrious career. First Steps in Music Nelson's initial foray into the music industry was fraught with challenges. He moved to Nashville, Tennessee, to pursue his dreams, but success did not come . Working as a songwriter, Nelson penned hits for other artists. which helped him gain a foothold in the competitive music scene. His songwriting skills contributed to his early earnings. laying the foundation for his net worth. Rise to Stardom Breakthrough Albums The 1970s marked a turning point in Willie Nelson's career. His albums "Shotgun Willie" (1973), "Red Headed Stranger" (1975). and "Stardust" (1978) received critical acclaim and commercial success. These albums not only solidified his position in the country music genre. but also introduced his music to a broader audience. The success of these albums played a crucial role in boosting Willie Nelson net worth. Iconic Songs Willie Nelson net worth is also attributed to his extensive catalog of hit songs. Tracks like "Blue Eyes Crying in the Rain," "On the Road Again," and "Always on My Mind" have become timeless classics. These songs have not only earned Nelson large royalties but have also ensured his continued relevance in the music industry. Acting and Film Career Hollywood Ventures In addition to his music career, Willie Nelson has also made a mark in Hollywood. His distinctive personality and on-screen presence have landed him roles in several films and television shows. Notable appearances include roles in "The Electric Horseman" (1979), "Honeysuckle Rose" (1980), and "Barbarosa" (1982). These acting gigs have added a significant amount to Willie Nelson net worth. Television Appearances Nelson's char

DRAFT NRW Recreation Strategy - People and Nature thriving together

Robin Grant

Celebrating World-environment-day-2024.pdf

rohankumarsinghrore1

Environmental Science Book By Dr. Y.K. Singh

AhmadKhan917612

Prevalence, biochemical and hematological study of diabetic patients

Open Access Research Paper

Diabetes is a rapidly and serious health problem in Pakistan. This chronic condition is associated with serious long-term complications, including higher risk of heart disease and stroke. Aggressive treatment of hypertension and hyperlipideamia can result in a substantial reduction in cardiovascular events in patients with diabetes 1. Consequently pharmacist-led diabetes cardiovascular risk (DCVR) clinics have been established in both primary and secondary care sites in NHS Lothian during the past five years. An audit of the pharmaceutical care delivery at the clinics was conducted in order to evaluate practice and to standardize the pharmacists’ documentation of outcomes. Pharmaceutical care issues (PCI) and patient details were collected both prospectively and retrospectively from three DCVR clinics. The PCI`s were categorized according to a triangularised system consisting of multiple categories. These were ‘checks’, ‘changes’ (‘change in drug therapy process’ and ‘change in drug therapy’), ‘drug therapy problems’ and ‘quality assurance descriptors’ (‘timer perspective’ and ‘degree of change’). A verified medication assessment tool (MAT) for patients with chronic cardiovascular disease was applied to the patients from one of the clinics. The tool was used to quantify PCI`s and pharmacist actions that were centered on implementing or enforcing clinical guideline standards. A database was developed to be used as an assessment tool and to standardize the documentation of achievement of outcomes. Feedback on the audit of the pharmaceutical care delivery and the database was received from the DCVR clinic pharmacist at a focus group meeting.

growbilliontrees.com-Trees for Granddaughter (1).pdf

yadavakashagra

Daan Park Hydrangea flower season I like it

a0966109726

Recently uploaded (20)

ppt on beauty of the nature by Palak.pptx

"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...

Alert-driven Community-based Forest monitoring: A case of the Peruvian Amazon

Bhopal Gas Leak Tragedy - A Night of death

IPCC Vice Chair Ladislaus Change Central Asia Climate Change Conference 27 Ma...

NRW Board Paper - DRAFT NRW Recreation Strategy

Navigating the complex landscape of AI governance

International+e-Commerce+Platform-www.cfye-commerce.shop

AGRICULTURE Hydrophonic FERTILISER PPT.pptx

UNDERSTANDING WHAT GREEN WASHING IS!.pdf

Natural farming @ Dr. Siddhartha S. Jena.pptx

Characterization and the Kinetics of drying at the drying oven and with micro...

Artificial Reefs by Kuddle Life Foundation - May 2024

Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Ventures

DRAFT NRW Recreation Strategy - People and Nature thriving together

Celebrating World-environment-day-2024.pdf

Environmental Science Book By Dr. Y.K. Singh

Prevalence, biochemical and hematological study of diabetic patients

growbilliontrees.com-Trees for Granddaughter (1).pdf

Daan Park Hydrangea flower season I like it