Download or read book A Quasi 3 D Finite Element Linked Model for Flow and Solute Transport in Subsurface Systems written by Muhammad G. Rabbani and published by . This book was released on 1990 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Serves Colorado written by Colorado State University and published by . This book was released on 1985 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book COSFLOW A Finite Element Model Coupling One Dimensional Canal Two Dimensional Overland and Three Dimensional Subsurface Flow written by and published by . This book was released on 1997 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the user's manual of COSFLOW, which is a three-dimensional Finite Element Model coupling one-dimensional (1-D) Canal, two-dimensional (2-D) Overland, and three-dimensional (3-D) Subsurface Flow. The 1-D channel flow is described by water budget under the assumption that equilibrium within each channel reach is achieved instantaneously. The 2-D overland flow is modeled with a diffusive wave approach. Retention ponds included in the overland flow are simulated with a water budget approximation. In this version, solute transport is not considered in the coupled system; but for the future consideration, the subsurface solute transport module is included in the computer code. In this report, however, emphasis is given to the coupling of flow between 3-D subsurface, 1-D channel, and 2-D overland retention pond systems. The details associated with solute transport in the subsurface, such as density-dependent transport and salt intrusion, can be found in the user's manual of 3DFEMFAT. In the channel module, the volumetric flow rates from the channel to the subsurface nodes, or vice versa, are computed within each channel time-step, and are accumulated within each subsurface time-step (one subsurface time-step usually includes many channel time-steps). The pumping from the channel can be directed to another channel reach, a subsurface node, or a retention pond, which is designed to store excess water in a canal.

Download or read book Research Serves Colorado written by Colorado Agricultural Experiment Station and published by . This book was released on 1990 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Quasi Three Dimensional Finite Element Model for Groundwater Flow and Transport in Multilayer Aquifers written by Rakesh Bahadur and published by . This book was released on 1988 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1990 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report written by Colorado Agricultural Experiment Station and published by . This book was released on 1990 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydraulic Engineering written by Richard M. Shane and published by . This book was released on 1991 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a forum for the advancement of scientific knowledge and engineering practice areas related to hydraulics and hydrology. Among the broad range of issues discussed are exclusive economic zone hydraulics, hydraulic data acquisition and display and innovative hydraulic structures.

Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1991 with total page 1470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Three dimensional Finite Element Modeling of Groundwater Flow and Solute Transport for the Lower Indus Basin Pakistan written by Samad Chandio Abdul and published by . This book was released on 2012 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of Industrial and Agricultural Impacts on the Hydrologic Environment the Second USA CIS Joint Conference on Environmental Hydrology and Hydrogeology Hydrogeological investigation evaluation and ground water modeling written by and published by . This book was released on 1993 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Integrated Support System for a Quasi Three dimensional Groundwater Flow and Solute Transport Model written by Asad S. Abu-Rizaiza and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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).

Download or read book SUTRA Saturated Unsaturated Transport A Finite Element Simulation Model for Saturated Unsaturated Fluid Density Dependent Ground Water Flow with Energy Transport Or Chemically Reactive Single Species Solute Transport written by and published by . This book was released on 1984 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: SUTRA (Saturated-Unsaturated Transport) is a computer program which simulates fluid movement and the transport of either energy or dissolved substances in a subsurface environment. The mathematical model employs a two-dimensional hybrid finite-element and integrated-finite-difference method to approximate the governing equations that describe the two interdependent processes that are simulated by SUTRA: (1) fluid density-dependent saturated or unsaturated ground-water flow, and either; (2a) transport of a solute in the ground water, in which the solute may be subject to: equilibrium adsorption on the porous matrix, and both first-order and zero-order production or decay, or, (2b) transport of thermal energy in the ground water and solid matrix of the aquifer. SUTRA provides, as the primary calculated result, fluid pressures and either solute concentrations or temperatures, as they vary with time, everywhere in the simulated subsurface system. SUTRA may also be used to simulate simpler subsets of the above process. Additional keywords: Fluid flow; Radial flow; FORTRAN. (Author).

Download or read book A Three dimensional Method of characteristics Solute Transport Model MOC3D written by Leonard F. Konikow and published by . This book was released on 1996 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Subregion Block Iteration to 3 D Finite Element Modeling of Subsurface Flow written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A subregion block iteration (SBI) technique has been developed in conjunction with finite element approximations of saturated-unsaturated flow equations. The proposed SBI technique is implemented in a three-dimensional finite element saturated-unsaturated flow model. The model is verified with a nonlinear diffusion equation having an analytical solution. It is then applied to a burial trench problem. It is not possible to solve this field problem using the direct elimination finite element method. The SBI technique provides significant improvement over models based on direct band solution methods in both central processing unit (CPU) storage and CPU time. 5 refs., 2 figs.

Download or read book Conservative Eulerian Lagrangian Methods and Mixed Finite Element Methods for Modeling of Groundwater Flow and Transport written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: New, improved computational methods for modeling of groundwater flow and transport have been formulated and implemented, with the intention of incorporating them as user options into the DoD Groundwater Modeling System under development at the Waterways Experiment Station. These methods, which are specifically designed to treat the difficulties of subsurface flows in porous media, yield greater accuracy with coarser spatial grids and longer time steps, making possible more detailed three-dimensional (3D) simulations than would otherwise be practical. For 3D solute transport, the methods have been implemented and perform as expected on representative test problems. Theoretical analysis that substantiates this performance has also been carried out. The method for flow equations leads to linear algebraic equations that are difficult to solve, and an efficient 3D solver that overcomes these problems has been analyzed theoretically, implemented, and shown to perform well on model problems. The 3D flow code has been extended to distorted grids, the 3D transport code has been incorporated into the USGS MOC3D codes, and the two codes are being coupled together into a flow and transport code for solute.