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Numerical Experiments On Solute Transport In Ground Water Flow Systems
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Book Synopsis Numerical Experiments on Solute Transport in Ground Water Flow Systems by : Nilkanth Kulkarni
Download or read book Numerical Experiments on Solute Transport in Ground Water Flow Systems written by Nilkanth Kulkarni and published by LAP Lambert Academic Publishing. This book was released on 2011-10 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is written for UG & PG students of civil and environmental engineering and earth sciences. Teachers, researchers and policy makers dealing with water will find it a useful reading material. The book introduces the subject of numerical groundwater flow and solute transport modeling followed by relevant review of literature. Chapter 3 looks to finite difference, finite element, random walk and modified method of characteristics models for groundwater flow and solute transport simulation. Chapter 4 considers validation and implementation of these models for various test cases. Chapter 5 examines the adequacy of best performed coupled model for field problem.
Book Synopsis Analytical Solutions for One-, Two-, and Three-dimensional Solute Transport in Ground-water Systems with Uniform Flow by : Eliezer J. Wexler
Download or read book Analytical Solutions for One-, Two-, and Three-dimensional Solute Transport in Ground-water Systems with Uniform Flow written by Eliezer J. Wexler and published by . This book was released on 1992 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical simulations of groundwater flow and solute transport in the lake 233 aquifer by : M. H. Klukas
Download or read book Numerical simulations of groundwater flow and solute transport in the lake 233 aquifer written by M. H. Klukas and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is volume 5, dealing with the surry nuclear power plant, of a seven-volume report of work done at battelle's columbus laboratories to estimate the amount of radioactive material that could be released from light water reactor (lwr) power plants under specific, hypothetical accident conditions. to make these estimates, five power plants were selected that represent the major categories of lwrs: three pressurized water reactors (pwrs) and two boiling water reactors (bwrs). specifications and data from these plants, along with data from laboratory experiments, were input to computer codes designed to describe various conditions prevailing and physical processes occuring inside reactor systems, including the containment and other buildings. ultimately, these computer codes provide an estimate of how much radioactive material would be able to escape to the environment if a specific series of events (an "accident sequence") took place. this volume reports the results of the analysis of the surry power station, a westinghouse pwr housed in a large, dry, high-pressure containment building. the specific accident sequences investigated for the surry plant were selected to represent cases of high risk, severe consequences, and most importantly, a wide range of physical conditions. the computer codes used to analyze the accident sequences include the new code march 2. the surry plant was previously examined in this study using an earlier version of the code, march 1.1; those results were reported in volume 1 of this series. other power plants included in the study are peach bottom bwr (volume 2); grand gulf bwr (volume 3); sequoyah pwr (volume 4); and zion pwr (volume 6). the seventh volume will address technical questions raised during peer review meetings sponsored by the nuclear regulatory commission.
Book Synopsis Subsurface Solute Transport Models and Case Histories by : Vyacheslav G. Rumynin
Download or read book Subsurface Solute Transport Models and Case Histories written by Vyacheslav G. Rumynin and published by Springer Science & Business Media. This book was released on 2012-01-14 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses the development of the basic knowledge of the subsurface solute transfer with a particular emphasis on field data collection and analysis coupled with modeling (analytical and numerical) tool application. The relevant theoretical developments are concerned mainly with the formulation and solution of deterministic mass-transport equations for a wide range of engineering issues in groundwater quality assessment and forecasting. The book gives many computational examples and case studies drawn from the conducted field investigations. The analyzed problems are as follows: investigation and prediction of groundwater contamination by industrial contaminants and solutions (radionuclides, chloride and nitrate brine) with special focus on the effect of (a) aquifer heterogeneity, anisotropy, and dual porosity, (b) density contrast existing between industrial waste and groundwater, or in density-stratified artesian and coastal groundwater systems; (c) physicochemical interactions that play a major role in retarding (e.g. adsorption) or enhancing (e.g. interactions between dissolved species and mobile colloids) contaminant transport; prediction of the effects of pumping on groundwater quality at wellfields; groundwater dating using stable and radioactive isotopes for prediction and assessment of contamination potential; field and laboratory tests’ design and analysis, and monitoring data interpretation; partitioning of surface and subsurface flows using isotope techniques. One of the most essential topics addressed in the book is the migration and fate of radionuclides. Model development is motivated by field data analysis from a number of radioactively contaminated sites in the Russian Federation: near-surface radioactive waste disposal sites and deep-well radioactive waste injection sites. They play a unique role in the advancement of knowledge of the subsurface behavior and fate of many hazardous radionuclides and can be considered as field-scale laboratories. Thus, the book, along with theoretical findings, contains field information, which will facilitate the understanding of subsurface solute transport and the development of a methodology for practical applications to groundwater hydrology.
Book Synopsis A conceptual framework for ground-water solute-transport studies with emphasis on physical mechanisms of solute movement by :
Download or read book A conceptual framework for ground-water solute-transport studies with emphasis on physical mechanisms of solute movement written by and published by . This book was released on 1987 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Experiments Involving Solute Transport in Heterogeneous Media by : Thomas Ralph Pratt
Download or read book Numerical Experiments Involving Solute Transport in Heterogeneous Media written by Thomas Ralph Pratt and published by . This book was released on 1986 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Groundwater Flow and Solute Transport by : Lakshmanan Elango
Download or read book Numerical Simulation of Groundwater Flow and Solute Transport written by Lakshmanan Elango and published by . This book was released on 2005 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the National Training Programme on Numerical Modelling of Groundwater Flow and Solute Transport, held at Chennai during 7-30 November 2005.
Book Synopsis U.S. Geological Survey Water-supply Paper by :
Download or read book U.S. Geological Survey Water-supply Paper written by and published by . This book was released on 1982 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geological Survey Water-supply Paper by :
Download or read book Geological Survey Water-supply Paper written by and published by . This book was released on 1988 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HST3D written by Kenneth L. Kipp and published by . This book was released on 1987 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Groundwater and Subsurface Remediation by : Helmut Kobus
Download or read book Groundwater and Subsurface Remediation written by Helmut Kobus and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The complex topic of in-situ subsurface remediation technologies has been ad dressed at an international symposium at the Universitat Stuttgart on September 26 and 27, 1995, on the occasion of the inauguration of the research facility VEGAS (Versuchseinrichtung zur Grundwasser- und Altlastensanierung). The results are contained in this book with 22 contributions from leading experts in the field from Europe and North America. The book illustrates the role of large-scale experiments in groundwater and subsurface remediation research. The subtopics address the various links between conventional laboratory experiments, technology-scale experiments and field-site studies, showing the contribution of large-scale experiments to bridging the gap between small-scale investigations and large-scale field investigations (upscaling). The interdisciplinary nature of the problems requires a multidisciplinary approach. Therefore, the idea has been followed to bring together the various disciplines in volved in the different aspects and facets of subsurface flow, transport and trans as hydraulics and hydrology, physics, formation, involving such diverse disciplines chemistry, microbiology, geology, industrial, chemical and hydraulic engineering, mathematics and hydroinformatics. The individual contributions from these di versified fields address the subject from different angles in an attempt to form a coherent picture of the various aspects of the complex problems of subsurface remediation. The focus is on research approaches and strategies with respect to the development of new and improved technologies and to the role of large-scale experiments in research and application.
Book Synopsis Applied Flow and Solute Transport Modeling in Aquifers by : Vedat Batu
Download or read book Applied Flow and Solute Transport Modeling in Aquifers written by Vedat Batu and published by CRC Press. This book was released on 2005-07-12 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over recent years, important contributions on the topic of solving various aquifer problems have been presented in numerous papers and reports. The scattered and wide-ranging nature of this information has made finding solutions and best practices difficult. Comprehensive and self-contained, Applied Flow and Solute Transport Modeling in Aquifers co
Book Synopsis Analytical Modeling of Solute Transport in Groundwater by : Mark Goltz
Download or read book Analytical Modeling of Solute Transport in Groundwater written by Mark Goltz and published by John Wiley & Sons. This book was released on 2017-02-08 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teaches, using simple analytical models how physical, chemical, and biological processes in the subsurface affect contaminant transport Uses simple analytical models to demonstrate the impact of subsurface processes on the fate and transport of groundwater contaminants Includes downloadable modeling tool that provides easily understood graphical output for over thirty models Modeling tool and book are integrated to facilitate reader understanding Collects analytical solutions from many sources into a single volume and, for the interested reader, shows how these solutions are derived from the governing model equations
Book Synopsis Experimental and Numerical Studies on Solute Transport in Unsaturated Heterogeneous Porous Media Under Evaporation Conditions by : Michel Bechtold
Download or read book Experimental and Numerical Studies on Solute Transport in Unsaturated Heterogeneous Porous Media Under Evaporation Conditions written by Michel Bechtold and published by Forschungszentrum Jülich. This book was released on 2012 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow And Transport In Porous Media - Proceedings Of The Summer School by : Brian Howard Gilding
Download or read book Flow And Transport In Porous Media - Proceedings Of The Summer School written by Brian Howard Gilding and published by World Scientific. This book was released on 1992-09-16 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents:Mathematical Modelling of Saturated and Unsaturated Groundwater Flow (B H Gilding)Applications of the Homogenization Method to Flow and Transport in Porous Media (U Hornung)Finite-Element-Approximation of Solute Transport in Porous Media with General Adsorption Processes (P Knabner)Free Boundary Problems in Fresh-Salt Goundwater Flow (C J van Duijn) Readership: Applied mathematicians and engineers. Keywords:Porous Media Equation;Diffusion Equation;Transport Equation;Infiltration Equation;Partial Differential Equation(PDE);Degenerate Parabolic Equation;Nonlinear PDE;Multiphase Flow in Porous Media;Nonlinear Diffusion;Reactive Solutes;Adsorption;Fresh and Salt Groundwater Flow;Homogenisation;Nonlinear Partial Differential Equations
Book Synopsis An Introduction to Solute Transport in Heterogeneous Geologic Media by : Tian-Chyi Jim Yeh
Download or read book An Introduction to Solute Transport in Heterogeneous Geologic Media written by Tian-Chyi Jim Yeh and published by Cambridge University Press. This book was released on 2023-02-28 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a unified and comprehensive overview of physical explanations of the stochastic concepts of solute transport processes, important scaling issues, and practical tools for the analysis of solute transport.
Book Synopsis Development of experimental, monitoring, and mathematical methods to quantify water fluxes and transport in heterogeneous aquifer system models by : Marko Hünniger
Download or read book Development of experimental, monitoring, and mathematical methods to quantify water fluxes and transport in heterogeneous aquifer system models written by Marko Hünniger and published by Cuvillier Verlag. This book was released on 2011-08-04 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study provides experimental and mathematical methods for the understanding and quantification of the water fluxes and solute transport in heterogeneous layered porous groundwater systems characterised by differences in hydraulic conductivities. On the one hand, multi-layered porous groundwater systems with different hydraulic conductivities are characterised by a heterogeneous flow field, which causes a heterogeneous mass transport. On the other hand, extreme differences in hydraulic conductivities create regions of immobile water which influence the mass transport. These two different structural heterogeneities – variable hydraulic conductivities and immobile/stagnant water zones – were investigated experimentally in different laboratory aquifer models. The influence of immobile and stagnant water zones on mass transport was investigated with multi-tracer tests using tracers with different diffusion properties, namely; uranine, bromide, deuterium, oxygen-18 as well as tritium-labelled water, in two-dimensional packed sediment column setups. Two separate column setups were filled. One column setup was filled with clay and sandy material while a second was filled with two different sand sediments. The observed tracer concentration breakthrough curves showed differences in peak concentrations and pronounced tails. Qualitative evaluation of tracer concentration curves led to the assumption that these effects were caused by a diffusive exchange of tracers between immobile and stagnant water regions. The measured data was modelled for the first time in porous media using the Single-Fissure Dispersion Model (SFDM). This model, which was developed for fissured aquifers, yielded a very good fit with all of the tracer concentration curves observed. Further quantitative evaluation of the system parameters (porosities of both materials, diameter of the water¬-bearing layer) in columns consisting of clay and sandy materials produced values that closely matched those independently known. This agreement of parameters confirmed that the model was valid for the heterogeneous systems tested. The model was able to calibrate the tracer curves and to estimate the parameters for the main water-bearing layer for the column consisting of two sandy materials with different hydraulic conductivities. The exchange into the bordering stagnant water occurred via both diffusion and an additional local transport by focusing the flow field into the more conductive material. Thus, in cases where the two materials have rather similar properties, the quantitative evaluation of the parameters of the less permeable layer is only possible when the porosity of that layer is known independently. Both types of experiments with a heterogeneous porous material showed that in groundwater sediments consisting of layers with different hydraulic conductivities the majority of mass is transported in the more conductive layer. The application of the SFDM in porous systems clearly proved that diffusive exchange into regions of immobile or stagnant water is an extremely important factor which has to be quantified. The study clearly demonstrated that multi-tracer experiments modelled with the SFDM are a very useful tool for solving the inverse problem, i.e. for quantifying parameters in such a heterogeneous porous medium. The influence of the local hydraulic conductivity differences on the flow field and mass transport was additionally experimentally investigated in a multi-layered large-scale indoor aquifer model (480 cm x 80 cm x 70 cm). A hydraulically more conductive layer caused a heterogeneous flow field which was traced by an instantaneous injection of uranine, bromide and tritium labelled water. Tracer observations performed in 2-D (vertical) at a high spatial and temporal resolution resulted in single tracer concentration curves. The tracer concentration curves clearly showed that multi-flow-path effects dominated. It was found that these can be adequately analysed using the Multi-Flow Dispersion Model (MFDM). The qualitative analyses showed that the more conductive sediment layer first focused the flow field, and that the water flux split into three different flow paths after leaving the focusing layer, as to be expected. The quantitative evaluation with the MFDM yielded the parameters of these flow paths. The volumetric water fluxes for flow paths with velocities of 2.7 m/d, 1.9 m/d and 1.3 m/d were estimated to be 55 %, 26 % and 19 % of the total water flux, respectively. It was also found that these flow paths were observed only over very short flow distances. After 2.5 m, all water fluxes characterised by different water velocities joined into one water flux which exhibited the mean water velocity but also showed higher dispersivity. This finding is extremely important for the further evaluation of pollutant migration and biodegradation. The present study clearly demonstrated that even in complex groundwater systems with a variety of structural heterogeneities the determination and quantification of different flow paths, and/or mobile and immobile water zones is possible by performing multi-tracer experiments using tracers with different diffusion properties, combined with an adequate modelling approach.
