Download or read book Modelling Surface and Sub Surface Flows written by and published by Elsevier. This book was released on 1988-06-01 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling Surface and Sub-Surface Flows
Download or read book Modelling surface flow subsurface flow interactions with the Systems Hydrologique Europeen written by J C. Bathurst and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Methods in Water Resources Modeling surface and sub surface flows written by Michael Anthony Celia and published by Elsevier Science & Technology. This book was released on 1988 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling Surface and Sub-Surface Flows.
Download or read book Finite Element Simulation in Surface and Subsurface Hydrology written by George F. Pinder and published by Elsevier. This book was released on 2013-09-03 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite Element Simulation in Surface and Subsurface Hydrology provides an introduction to the finite element method and how the method is applied to problems in surface and subsurface hydrology. The book presents the basic concepts of the numerical methods and the finite element approach; applications to problems on groundwater flow and mass and energy transport; and applications to problems that involve surface water dynamics. Computational methods for the solution of differential equations; classification of partial differential equations; finite difference and weighted residual integral techniques; and The Galerkin finite element method are discussed as well. The text will be of value to engineers, hydrologists, and students in the field of engineering.
Download or read book Modeling and Numerical Simulation for the Coupling of Surface Flow with Subsurface Flow written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research works on the coupling of incompressible surface flow with subsurface porous media flow arouse increasing interest recently. The coupled problem is a typical multi-domain problem with multi-physics. In-depth understanding of this problem requires both modeling process and numerical study. In this work, some existing surface flow models and subsurface flow models are reviewed; the interaction mechanisms of surface flow with subsurface porous media flow are discussed; numerical algorithms for solving coupled surface/subsurface flow models are proposed; in particular, preconditioning techniques and two grid algorithms are mathematically and numerically investigated. In Chapter 1, we present some existing models for describing surface fluid flow motion as well as those for subsurface porous media flow motion. Moreover, we study some coupled models including both surface fluid flow and subsurface porous media flow. The interactions of fluid flow and porous media flow are reflected by transmission conditions at the interface between surface and subsurface. Other related multimodels for incompressible flows will also be introduced. In Chapter 2, we focus on preconditioning techniques for the coupled Stokes/Darcy model, a linear model for the surface/subsurface flows coupling. Several decoupled preconditioners are proposed and analyzed. Especially, the convergence rate of GMRES method with these preconditioners is shown to be independent of meshsize. For improving the robustness with respect to physical parameters, coupled preconditioners are also theoretically and numerically investigated. In Chapter 3, a two grid algorithm for decoupling the coupled Stokes/Darcy model is studied. The two grid algorithm consists of solving a coupled coarse grid problem, then solving two sub-problems in parallel. We use coarse grid solution to supplement boundary conditions at the interface for fine grid subproblems. Theoretical analysis shows that the two grid algorithm retains opt.
Download or read book Surface and Subsurface Flow and Contaminant Transport Modeling in Lower Altamaha Watershed written by Orhan Gunduz and published by . This book was released on 2004 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Models of Surface subsurface Flow Interaction in an Ephemeral Channel written by David L. Freyberg and published by . This book was released on 1980 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Fluid Dynamics written by Owen M. Phillips and published by Cambridge University Press. This book was released on 2009-02-19 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes fluid flow, transport and contamination in rocks and sediments, for graduate students and professionals in hydrology, water resources, geochemistry.
Download or read book Simulation of Flow in Porous Media written by Peter Bastian and published by Walter de Gruyter. This book was released on 2013-07-31 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsurface flow problems are inherently multiscale in space due to the large variability of material properties and in time due to the coupling of many different physical processes, such as advection, diffusion, reaction and phase exchange. Subsurface flow models still need considerable development. For example, nonequilibrium effects, entrapped air, anomalous dispersion and hysteresis effects can still not be adequately described. Moreover, parameters of the models are diffcult to access and often uncertain. Computational issues in subsurface flows include the treatment of strong heterogeneities and anisotropies in the models, the effcient solution of transport-reaction problems with many species, treatment of multiphase-multicomponent flows and the coupling of subsurface flow models to surface flow models given by shallow water or Stokes equations. With respect to energy and the environment, in particular the modelling and simulation of radioactive waste management and sequestration of CO2 underground have gained high interest in the community in recent years. Both applications provide unique challenges ranging from modelling of clay materials to treating very large scale models with high-performance computing. This book brings together key numerical mathematicians whose interest is in the analysis and computation of multiscale subsurface flow and practitioners from engineering and industry whose interest is in the applications of these core problems.
Download or read book A Simultaneous Solution Approach for Coupled Surface and Subsurface Flow Modeling written by Orhan Gunduz and published by . This book was released on 2003 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Surface subsurface Flow Modeling in PFLOTRAN written by and published by . This book was released on 2016 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding soil water, groundwater, and shallow surface water dynamics as an integrated hydrological system is critical for understanding the Earth’s critical zone, the thin outer layer at our planet’s surface where vegetation, soil, rock, and gases interact to regulate the environment. Computational tools that take this view of soil moisture and shallow surface flows as a single integrated system are typically referred to as integrated surface/subsurface hydrology models. We extend the open-source, highly parallel, subsurface flow and reactive transport simulator PFLOTRAN to accommodate surface flows. In contrast to most previous implementations, we do not represent a distinct surface system. Instead, the vertical gradient in hydraulic head at the land surface is neglected, which allows the surface flow system to be eliminated and incorporated directly into the subsurface system. This tight coupling approach leads to a robust capability and also greatly simplifies implementation in existing subsurface simulators such as PFLOTRAN. Successful comparisons to independent numerical solutions build confidence in the approximation and implementation. Example simulations of the Walker Branch and East Fork Poplar Creek watersheds near Oak Ridge, Tennessee demonstrate the robustness of the approach in geometrically complex applications. The lack of a robust integrated surface/subsurface hydrology capability had been a barrier to PFLOTRAN’s use in critical zone studies. This work addresses that capability gap, thus enabling PFLOTRAN as a community platform for building integrated models of the critical zone.
Download or read book A Coupled Model for Surface and Subsurface Flow and Transport written by Joyce Bridget Avendt and published by . This book was released on 2007 with total page 478 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 Map based surface and subsurface flow simulation models written by Zichuan Ye and published by . This book was released on 1996 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Surface and Subsurface Stormflow on Steeply sloping Forested Watersheds written by and published by . This book was released on 1983 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Models of Surface subsurface Flow Interaction in an Ephemeral Channel written by David Lewis Freyberg and published by . This book was released on 1981 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mimetic Finite Difference Method for Elliptic Problems written by Lourenco Beirao da Veiga and published by Springer. This book was released on 2014-05-22 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the theoretical and computational aspects of the mimetic finite difference method for a wide class of multidimensional elliptic problems, which includes diffusion, advection-diffusion, Stokes, elasticity, magnetostatics and plate bending problems. The modern mimetic discretization technology developed in part by the Authors allows one to solve these equations on unstructured polygonal, polyhedral and generalized polyhedral meshes. The book provides a practical guide for those scientists and engineers that are interested in the computational properties of the mimetic finite difference method such as the accuracy, stability, robustness, and efficiency. Many examples are provided to help the reader to understand and implement this method. This monograph also provides the essential background material and describes basic mathematical tools required to develop further the mimetic discretization technology and to extend it to various applications.
