Using Computer-simulated hydrological model (SWAT) to estimate the ground-wat...Dhiraj Jhunjhunwala
Using a computer-simulated hydrological model (SWAT), the researchers estimated groundwater recharge due to rainfall in a region of interest in Texas, US. They delineated the watershed using DEM data, defined hydrologic response units based on land use and soil maps, and input weather data to run the SWAT model over 15 years. The model was used to calculate infiltration over 10 years, from which groundwater recharge was estimated. The researchers acknowledged their guide and department for assistance with the project.
Cuốn sách trình bày các khái niệm cơ bản về Phần tử hữu hạn (PTHH), phương pháp thiết lập phương trình ma trận đặc trưng của PTHH trong dẫn nhiệt ổn định và trong dẫn nhiệt không ổn định, cách xây dựng và giải các bài toán dẫn nhiệt ổn định và không ổn định bằng phương pháp PTHH.
Presented in the ASEAN Cooperation on Utilization of Space Technology for Disaster Management Seminar, 11th Aug 2010 at Miracle Grand Convention Hotel, Thailand. Hosted by GISTDA
Cuốn sách trình bày các kiến thức cơ sở về truyền nhiệt cho chương trình đại học kỹ thuật và một số kiến thức chuyên sâu cho cho chương trình cao học và công tác nghiên cứu.
Hydrologic Assessment in a Middle Narmada Basin, India using SWAT ModelSumant Diwakar
The document describes a study that used the SWAT (Soil and Water Assessment Tool) model to assess hydrologic processes in the middle Narmada River basin in India. Key inputs to the SWAT model included digital elevation data, land use/land cover maps, soil data, and weather data. The model was set up to simulate hydrologic response units based on land use, soil type, and slope. Model outputs included estimates of precipitation, temperature, evapotranspiration, and streamflow over the study period. Results indicated that about 46% of annual precipitation was lost to evapotranspiration in the basin. The study provides a hydrologic assessment of the basin using remote sensing and geospatial data within the SWAT
Phương pháp sai phân hữu hạn và phần tử hữu hạn trong truyền nhiệtTrinh Van Quang
Bài giảng cho các lớp cao học cơ khí. Nội dung trình bày các kiến thức cơ bản của phương pháp sai phân hữu hạn và phần tử hữu hạn trong truyền nhiệt. Tài liệu cũng có thể được tham khảo để áp dụng hai phương pháp này trong nghiên cứu tính nhiệt công trình, vật thể.
Using Computer-simulated hydrological model (SWAT) to estimate the ground-wat...Dhiraj Jhunjhunwala
Using a computer-simulated hydrological model (SWAT), the researchers estimated groundwater recharge due to rainfall in a region of interest in Texas, US. They delineated the watershed using DEM data, defined hydrologic response units based on land use and soil maps, and input weather data to run the SWAT model over 15 years. The model was used to calculate infiltration over 10 years, from which groundwater recharge was estimated. The researchers acknowledged their guide and department for assistance with the project.
Cuốn sách trình bày các khái niệm cơ bản về Phần tử hữu hạn (PTHH), phương pháp thiết lập phương trình ma trận đặc trưng của PTHH trong dẫn nhiệt ổn định và trong dẫn nhiệt không ổn định, cách xây dựng và giải các bài toán dẫn nhiệt ổn định và không ổn định bằng phương pháp PTHH.
Presented in the ASEAN Cooperation on Utilization of Space Technology for Disaster Management Seminar, 11th Aug 2010 at Miracle Grand Convention Hotel, Thailand. Hosted by GISTDA
Cuốn sách trình bày các kiến thức cơ sở về truyền nhiệt cho chương trình đại học kỹ thuật và một số kiến thức chuyên sâu cho cho chương trình cao học và công tác nghiên cứu.
Hydrologic Assessment in a Middle Narmada Basin, India using SWAT ModelSumant Diwakar
The document describes a study that used the SWAT (Soil and Water Assessment Tool) model to assess hydrologic processes in the middle Narmada River basin in India. Key inputs to the SWAT model included digital elevation data, land use/land cover maps, soil data, and weather data. The model was set up to simulate hydrologic response units based on land use, soil type, and slope. Model outputs included estimates of precipitation, temperature, evapotranspiration, and streamflow over the study period. Results indicated that about 46% of annual precipitation was lost to evapotranspiration in the basin. The study provides a hydrologic assessment of the basin using remote sensing and geospatial data within the SWAT
Phương pháp sai phân hữu hạn và phần tử hữu hạn trong truyền nhiệtTrinh Van Quang
Bài giảng cho các lớp cao học cơ khí. Nội dung trình bày các kiến thức cơ bản của phương pháp sai phân hữu hạn và phần tử hữu hạn trong truyền nhiệt. Tài liệu cũng có thể được tham khảo để áp dụng hai phương pháp này trong nghiên cứu tính nhiệt công trình, vật thể.
1. The study models erosion in the Mizewa watershed in the Upper Blue Nile Basin of Ethiopia using the SWAT model. Erosion rates were high, with average annual soil loss of 40.91 tons/ha.
2. Calibration and validation of the SWAT model showed good performance with R2 and NSE values over 0.5 and fair agreement between observed and simulated results.
3. The highest erosion occurred in July and August due to high rainfall. Surface runoff accounted for 24% of rainfall and was the main driver of erosion in the watershed.
This document discusses using hydrological models like SWAT, MODFLOW, and SEAWAT to assess the impacts of climate change on water resources. It provides an overview of these models, including their inputs, outputs, capabilities, and examples of case studies applying the models. Specifically, SWAT is highlighted as it can be used at the watershed scale to model processes like precipitation, evapotranspiration, infiltration, surface runoff, and streamflow under different climate scenarios. The document emphasizes the importance of hydrological modeling and tools like MODFLOW for understanding and predicting hydrologic system responses to climate change.
This document summarizes Dhiraj Jhunjhunwala's industrial internship from June 1-30, 2015 working on the Ganga Greens building construction project with Dynamo Realcon Pvt. Ltd. The project involves constructing residential apartments on 2.8 acres of land along the river with 60% open space, river views, and fortified riverbanks. Key activities included reviewing the master plan, using materials like sand, cement and steel bars, pouring concrete of grades M25 and M30 using mix designs, conducting compressive strength tests, load tests on pile foundations, and sonic tests on bored piles. Photographs documented the construction site progress.
Behaviour of piles under the effect of lateral loading in sandy soilDhiraj Jhunjhunwala
This document summarizes an experiment on the behavior of piles in sandy soil under loading. The experimental setup involved a metal box filled with layers of sand that was compacted to a specific density. A deflectometer was used to measure the displacement of a model pile made of PVC pipe as loads were incrementally added. Load and deflection measurements were recorded over time. The LPILE software was used to model the experiment and generate graphs of deflection versus load, bending moment versus depth, and lateral deflection versus depth. The results provide insight into how piles transmit and resist loads in loose sandy soils.
Dhi uk 2015 - marine - a new approach to modelling long-term shoreline evolut...Stephen Flood
This document discusses a new shoreline evolution model in MIKE 21 FM that uses a constrained morphological approach. It provides conceptual descriptions and examples of applications of the model. The model computes waves, currents and sediment transport on an area mesh and divides the nearshore area into strips to calculate shoreline movement. It offers flexibility with a curved baseline and ability to model complex bathymetry and hydrodynamics over long time scales. Examples shown include offshore breakwaters, ship wrecks, groyne fields, spits, and mega-nourishments. The document describes model inputs, solution techniques, outputs, and methods for speeding up simulations.
Undertaking Modelling of Flooding due to Wave Overtopping using the MIKE by D...Stephen Flood
Undertaking Modelling of Flooding due to Wave Overtopping using the MIKE by DHI Software Suite - Dr Suzie Clarke (DHI)
This presentation outlines the basis for one of the methodologies that can be followed in order to simulate the flooding of coastal areas due to overtopping of coastal defences by extreme or storm wave conditions. It is not expected that the slides are exhaustive in detail, nor present the only approach, but are provided to give basic guidance for all experience levels. Care is advised when following this methodology and all results should be subjected to reasonable checking.
Read the full Executive Summary here - http://s3.amazonaws.com/dhiuk_blog_storage/UGM_2014/Overtopping-with-BW-Guidance-Executive-Summary.pdf
This document summarizes the work of PIANC Working Group 49, which updated guidelines for designing harbour approach channels. The group included maritime engineers, naval architects, scientists, and port representatives from various countries. The new report provides conceptual and detailed design methods for determining appropriate channel widths and depths. It considers factors like ship sizes, vertical clearances, and operating limits. The guidelines reference other groups for topics like aids to navigation and environmental issues. After review by related organizations, the updated report was published in 2014 to replace PIANC's 1997 channel design guidelines.
1) The document describes the design of a rubble mound breakwater according to the Coastal Engineering Manual from 2006. This includes determining the height, stone sizes for each layer, and bearing capacity of the soil.
2) Key design parameters are specified, such as a maximum allowable overtopping of 0.4 m3/sec/m, water depth varying from 5.5m to 7.2m, and quarry stone used for the armor and under layers.
3) Calculations are shown to determine the design elevation of 12.3m above sea level, accounting for freeboard, wave runup, and settlements. Dimensions such as stone sizes, layer thicknesses, and number of
The document describes a physical model facility constructed to study coastal inlets. The facility includes a 46-m by 99-m concrete basin with adjustable bathymetry. Sensors measure waves, currents and water levels. Studies examine how changes to channel alignment or structures impact flows. The facility can model specific inlets or perform generic studies, and has been used to examine issues like bank erosion or spit development. It aims to efficiently study inlet hydraulics and sedimentation.
This chapter discusses various structural features used for coastal engineering projects. It provides details and illustrations of common structures like seawalls, bulkheads, revetments, protective beaches, sand dunes, sand bypassing systems, groins, jetties, and breakwaters. The chapter also covers typical construction materials and design practices used for shore protection structures. The information is intended to provide comparisons between different structure types rather than specific recommendations for dimensions or applications.
1. The study models erosion in the Mizewa watershed in the Upper Blue Nile Basin of Ethiopia using the SWAT model. Erosion rates were high, with average annual soil loss of 40.91 tons/ha.
2. Calibration and validation of the SWAT model showed good performance with R2 and NSE values over 0.5 and fair agreement between observed and simulated results.
3. The highest erosion occurred in July and August due to high rainfall. Surface runoff accounted for 24% of rainfall and was the main driver of erosion in the watershed.
This document discusses using hydrological models like SWAT, MODFLOW, and SEAWAT to assess the impacts of climate change on water resources. It provides an overview of these models, including their inputs, outputs, capabilities, and examples of case studies applying the models. Specifically, SWAT is highlighted as it can be used at the watershed scale to model processes like precipitation, evapotranspiration, infiltration, surface runoff, and streamflow under different climate scenarios. The document emphasizes the importance of hydrological modeling and tools like MODFLOW for understanding and predicting hydrologic system responses to climate change.
This document summarizes Dhiraj Jhunjhunwala's industrial internship from June 1-30, 2015 working on the Ganga Greens building construction project with Dynamo Realcon Pvt. Ltd. The project involves constructing residential apartments on 2.8 acres of land along the river with 60% open space, river views, and fortified riverbanks. Key activities included reviewing the master plan, using materials like sand, cement and steel bars, pouring concrete of grades M25 and M30 using mix designs, conducting compressive strength tests, load tests on pile foundations, and sonic tests on bored piles. Photographs documented the construction site progress.
Behaviour of piles under the effect of lateral loading in sandy soilDhiraj Jhunjhunwala
This document summarizes an experiment on the behavior of piles in sandy soil under loading. The experimental setup involved a metal box filled with layers of sand that was compacted to a specific density. A deflectometer was used to measure the displacement of a model pile made of PVC pipe as loads were incrementally added. Load and deflection measurements were recorded over time. The LPILE software was used to model the experiment and generate graphs of deflection versus load, bending moment versus depth, and lateral deflection versus depth. The results provide insight into how piles transmit and resist loads in loose sandy soils.
Dhi uk 2015 - marine - a new approach to modelling long-term shoreline evolut...Stephen Flood
This document discusses a new shoreline evolution model in MIKE 21 FM that uses a constrained morphological approach. It provides conceptual descriptions and examples of applications of the model. The model computes waves, currents and sediment transport on an area mesh and divides the nearshore area into strips to calculate shoreline movement. It offers flexibility with a curved baseline and ability to model complex bathymetry and hydrodynamics over long time scales. Examples shown include offshore breakwaters, ship wrecks, groyne fields, spits, and mega-nourishments. The document describes model inputs, solution techniques, outputs, and methods for speeding up simulations.
Undertaking Modelling of Flooding due to Wave Overtopping using the MIKE by D...Stephen Flood
Undertaking Modelling of Flooding due to Wave Overtopping using the MIKE by DHI Software Suite - Dr Suzie Clarke (DHI)
This presentation outlines the basis for one of the methodologies that can be followed in order to simulate the flooding of coastal areas due to overtopping of coastal defences by extreme or storm wave conditions. It is not expected that the slides are exhaustive in detail, nor present the only approach, but are provided to give basic guidance for all experience levels. Care is advised when following this methodology and all results should be subjected to reasonable checking.
Read the full Executive Summary here - http://s3.amazonaws.com/dhiuk_blog_storage/UGM_2014/Overtopping-with-BW-Guidance-Executive-Summary.pdf
This document summarizes the work of PIANC Working Group 49, which updated guidelines for designing harbour approach channels. The group included maritime engineers, naval architects, scientists, and port representatives from various countries. The new report provides conceptual and detailed design methods for determining appropriate channel widths and depths. It considers factors like ship sizes, vertical clearances, and operating limits. The guidelines reference other groups for topics like aids to navigation and environmental issues. After review by related organizations, the updated report was published in 2014 to replace PIANC's 1997 channel design guidelines.
1) The document describes the design of a rubble mound breakwater according to the Coastal Engineering Manual from 2006. This includes determining the height, stone sizes for each layer, and bearing capacity of the soil.
2) Key design parameters are specified, such as a maximum allowable overtopping of 0.4 m3/sec/m, water depth varying from 5.5m to 7.2m, and quarry stone used for the armor and under layers.
3) Calculations are shown to determine the design elevation of 12.3m above sea level, accounting for freeboard, wave runup, and settlements. Dimensions such as stone sizes, layer thicknesses, and number of
The document describes a physical model facility constructed to study coastal inlets. The facility includes a 46-m by 99-m concrete basin with adjustable bathymetry. Sensors measure waves, currents and water levels. Studies examine how changes to channel alignment or structures impact flows. The facility can model specific inlets or perform generic studies, and has been used to examine issues like bank erosion or spit development. It aims to efficiently study inlet hydraulics and sedimentation.
This chapter discusses various structural features used for coastal engineering projects. It provides details and illustrations of common structures like seawalls, bulkheads, revetments, protective beaches, sand dunes, sand bypassing systems, groins, jetties, and breakwaters. The chapter also covers typical construction materials and design practices used for shore protection structures. The information is intended to provide comparisons between different structure types rather than specific recommendations for dimensions or applications.
The presentation topic is harbour dock engineering. It will be presented by Kashif Ali Khan, Izhar Ahmad, and Seyed Bakth Jamal Shah. A harbour provides shelter for loading and unloading cargo vessels and for vessel building, repair, and launching. Harbours are classified as natural, semi-natural, or artificial. Requirements of a good harbour include sufficient depth for all ship types, secure anchorage, breakwaters to reduce wave action, and an entrance wide enough for easy ship passage. Harbour planning requires thorough site surveys and consideration of local natural phenomena.
MIKE 21 is a 2D modeling software for coastal and marine environments. It contains multiple engines and modules that can simulate various physical, chemical, and biological processes. Some key applications of MIKE 21 include design assessment for coastal and offshore structures, harbor planning, coastal flooding, water quality modeling, and sediment transport modeling. MIKE 21 offers flexibility in model setup with different grid types and the ability to focus grid resolution where needed. It is a comprehensive modeling tool for coastal and ocean environments.