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3dsalt A Three Dimensional Finite Element Model Of Density Dependent Flow And Transport Through Saturated Unsaturated Media
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Book Synopsis 3DSALT: A Three-Dimensional Finite Element Model of Density-Dependent Flow and Transport Through Saturated-Unsaturated Media by : Gour-Tsyh Yeh
Download or read book 3DSALT: A Three-Dimensional Finite Element Model of Density-Dependent Flow and Transport Through Saturated-Unsaturated Media written by Gour-Tsyh Yeh and published by . This book was released on 1994 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the user's manual of 3DSALT, A Three-Dimensional Finite Element Model of Density-Dependent Flow and Transport Through Saturated- Unsaturated Media. The model is designed for generic application. The model is developed specifically for solving seawater intrusion problems in subsurface media. It consists of a flow module and a transport module. In comparison to conventional finite element (including both Galerkin and upstream finite elements) or finite difference (including both central and upwind finite differences) models, the transport module of 3DSALT offers several advantages: (a) it completely eliminates numerical oscillation due to advection terms, (b) it can be applied to mesh Peclet numbers ranging from 0 to infinity (conventional finite element or finite difference models typically impose unduly severe restriction on the mesh Peclet number), (c) it can use very large time- step sizes to greatly reduce numerical dispersion (in fact, the larger the time- step, the better the solution with respect to advection transport; the time-step size is limited only by the accuracy requirement with respect to diffusion/ dispersion transport, which is normally not a very severe restriction), and (d) the hybrid Lagrangian-Eulerian finite element approach is always superior to and will never be worse than its corresponding upstream finite element method. Because of these advantages, 3DSALT is ideal for simulating density-dependent flow and advection-dominant transport. Density-dependent flow, Lagrangian- Eulerian approach, Finite element, Saturated-unsaturated flow, Groundwater.
Book Synopsis FEMWATER: A Three-Dimensional Finite Element Computer Model for Simulating Density-Dependent Flow and Transport in Variably Saturated Media by :
Download or read book FEMWATER: A Three-Dimensional Finite Element Computer Model for Simulating Density-Dependent Flow and Transport in Variably Saturated Media written by and published by . This book was released on 1997 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the user's manual of FEMWATER, A Three-dimensional Finite Element Computer Model for Simulating Density-Dependent Flow and Transport The intended users of the manual will have a wide range of technical experience and have different needs that the model and documentation will fulfill. Sophisticated users will find descriptions of the numerical techniques and a complete set of governing equations that form the theoretical basis of the model. The casual users will find examples of several types of problems that will include their type of application. FEMWATER is a modern implementation of the two older models, 3DFEMWATER (flow) and 3DLEWASTE (transport). FEMWATER was formed by combining the two codes into a single coupled flow and transport model. The improvements implemented in FEMWATER are numerous. First, the entire program structure was changed to allow its integration into the Department of Defense Groundwater Modeling System (GMS). The GMS contains a state-of-the-art graphical user environmental that allows efficient model setup and visualization. Second, a series of new solvers were added to replace the previously used block iterative solver. The new solvers allow an arbitrary node numbering scheme that enables easier graphical user interface connections and still provide improved computational efficient. Their, density-driven (salinity) transport capability was added to allow salinity intrusion studies in coastal aquifers. This required the coupling of flow and transport within a common model, which is the last major improvement.
Book Synopsis Three-dimensional Time-varying Optimization of Groundwater Remediation by : Steven Robert Halmi
Download or read book Three-dimensional Time-varying Optimization of Groundwater Remediation written by Steven Robert Halmi and published by . This book was released on 1996 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis List of Publications of the U.S. Army Engineer Waterways Experiment Station by :
Download or read book List of Publications of the U.S. Army Engineer Waterways Experiment Station written by and published by . This book was released on 1995 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three Dimensional Finite Element Model for Density Dependent Contaminant Transport in Aquifers by : Sameh Attiya Sakr
Download or read book Three Dimensional Finite Element Model for Density Dependent Contaminant Transport in Aquifers written by Sameh Attiya Sakr and published by . This book was released on 1995 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 3DFEMWATER written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3DFEMWATER model is designed to treat heterogeneous and anisotropic media consisting of as many geologic formations as desired, consider both distributed and point sources/sinks that are spatially and temporally dependent, accept the prescribed initial conditions or obtain them by simulating a steady state version of the system under consideration, deal with a transient head distributed over the Dirichlet boundary, handle time-dependent fluxes due to pressure gradient varying along the Neumann boundary, treat time-dependent total fluxes distributed over the Cauchy boundary, automatically determine variable boundary conditions of evaporation, infiltration, or seepage on the soil-air interface, include the off-diagonal hydraulic conductivity components in the modified Richards equation for dealing with cases when the coordinate system does not coincide with the principal directions of the hydraulic conductivity tensor, give three options for estimating the nonlinear matrix, include two options (successive subregion block iterations and successive point interactions) for solving the linearized matrix equations, automatically reset time step size when boundary conditions or source/sinks change abruptly, and check the mass balance computation over the entire region for every time step. The model is verified with analytical solutions or other numerical models for three examples.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 3DFEMWATER written by G. T. Yeh and published by . This book was released on 1987 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Hans-Jörg G. Diersch Publisher :Springer Science & Business Media ISBN 13 :364238739X Total Pages :1018 pages Book Rating :4.6/5 (423 download)
Download or read book FEFLOW written by Hans-Jörg G. Diersch and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt: FEFLOW is an acronym of Finite Element subsurface FLOW simulation system and solves the governing flow, mass and heat transport equations in porous and fractured media by a multidimensional finite element method for complex geometric and parametric situations including variable fluid density, variable saturation, free surface(s), multispecies reaction kinetics, non-isothermal flow and multidiffusive effects. FEFLOW comprises theoretical work, modeling experiences and simulation practice from a period of about 40 years. In this light, the main objective of the present book is to share this achieved level of modeling with all required details of the physical and numerical background with the reader. The book is intended to put advanced theoretical and numerical methods into the hands of modeling practitioners and scientists. It starts with a more general theory for all relevant flow and transport phenomena on the basis of the continuum approach, systematically develops the basic framework for important classes of problems (e.g., multiphase/multispecies non-isothermal flow and transport phenomena, discrete features, aquifer-averaged equations, geothermal processes), introduces finite-element techniques for solving the basic balance equations, in detail discusses advanced numerical algorithms for the resulting nonlinear and linear problems and completes with a number of benchmarks, applications and exercises to illustrate the different types of problems and ways to tackle them successfully (e.g., flow and seepage problems, unsaturated-saturated flow, advective-diffusion transport, saltwater intrusion, geothermal and thermohaline flow).
Book Synopsis Three-dimensional Finite Element Model for Water Flow in Variably Saturated Heterogeneous Media by : A.K. Katyal
Download or read book Three-dimensional Finite Element Model for Water Flow in Variably Saturated Heterogeneous Media written by A.K. Katyal and published by . This book was released on 1989 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1995 with total page 1742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Three-dimensional Galerkin-finite Element Formulation of Flow and Mass Transport Through Porous Media by : Sumant K. Gupta
Download or read book Three-dimensional Galerkin-finite Element Formulation of Flow and Mass Transport Through Porous Media written by Sumant K. Gupta and published by . This book was released on 1975 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Three-dimensional Finite Element Model to Simulate Groundwater Flow of Two Immiscible Fluids Through Anisotropic and Heterogeneous Media by : Panfilo Andrea Mascianglioli
Download or read book A Three-dimensional Finite Element Model to Simulate Groundwater Flow of Two Immiscible Fluids Through Anisotropic and Heterogeneous Media written by Panfilo Andrea Mascianglioli and published by . This book was released on 1993 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Three-dimensional Galerkin Finite Element Model for the Analysis of Contaminant Transport in Variably Saturated Porous Media by : G. Ségol
Download or read book A Three-dimensional Galerkin Finite Element Model for the Analysis of Contaminant Transport in Variably Saturated Porous Media written by G. Ségol and published by . This book was released on 1976 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FEFLOW written by Hans-Joerg Diersch and published by Springer. This book was released on 2013-11-28 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: FEFLOW is an acronym of Finite Element subsurface FLOW simulation system and solves the governing flow, mass and heat transport equations in porous and fractured media by a multidimensional finite element method for complex geometric and parametric situations including variable fluid density, variable saturation, free surface(s), multispecies reaction kinetics, non-isothermal flow and multidiffusive effects. FEFLOW comprises theoretical work, modeling experiences and simulation practice from a period of about 40 years. In this light, the main objective of the present book is to share this achieved level of modeling with all required details of the physical and numerical background with the reader. The book is intended to put advanced theoretical and numerical methods into the hands of modeling practitioners and scientists. It starts with a more general theory for all relevant flow and transport phenomena on the basis of the continuum approach, systematically develops the basic framework for important classes of problems (e.g., multiphase/multispecies non-isothermal flow and transport phenomena, discrete features, aquifer-averaged equations, geothermal processes), introduces finite-element techniques for solving the basic balance equations, in detail discusses advanced numerical algorithms for the resulting nonlinear and linear problems and completes with a number of benchmarks, applications and exercises to illustrate the different types of problems and ways to tackle them successfully (e.g., flow and seepage problems, unsaturated-saturated flow, advective-diffusion transport, saltwater intrusion, geothermal and thermohaline flow).
Book Synopsis Simulation of Three-dimensional, Time-dependent, Incompressible Flows by a Finite Element Method by :
Download or read book Simulation of Three-dimensional, Time-dependent, Incompressible Flows by a Finite Element Method written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A finite element model has been developed for simulating the dynamics of problems encountered in atmospheric pollution and safety assessment studies. The model is based on solving the set of three-dimensional, time-dependent, conservation equations governing incompressible flows. Spatial discretization is performed via a modified Galerkin finite element method, and time integration is carried out via the forward Euler method (pressure is computed implicitly, however). Several cost-effective techniques (including subcycling, mass lumping, and reduced Gauss-Legendre quadrature) which have been implemented are discussed. Numerical results are presented to demonstrate the applicability of the model.
Book Synopsis A Three-dimensional Finite Element Model Coupled with Parameter Identifikation for Aquifer Solute Transport by : Chuching Wang
Download or read book A Three-dimensional Finite Element Model Coupled with Parameter Identifikation for Aquifer Solute Transport written by Chuching Wang and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
