Download or read book Theoretical Experimental and Numerical Investigation of Flow and Solute Transport in Saturated Porous Media Subjected to Violation to the Continuum Hypothesis microform written by Amgad Salama and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and Numerical Study of Transient Water Flow and Solute Transport in Layered Saturated unsaturated Porous Media written by Mafiz Md Uddin and published by . This book was released on 1998* with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and Theoretical Analysis of Closed flow Column Experiments written by Thomas Ritschel and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research of solute transport fundamentally contributes to our understanding of soil functions as most processes in soils are dynamically driven and related to the transient conditions produced by the transport of solutes. For this reason, especially the transport of contaminants is frequently studied with laboratory scale column outflow experiments in an open-flow mode. This thesis presents a complementary approach of conducting saturated column experiments that is characterized by the recirculation of the effluent into the inflow via a mixing vessel and is therefore referred to as closed-flow mode column experiment. Depending on the ratio of the volume of the mixing vessel and the water-filled pore space, a damped oscillating concentration emerges in the effluent and in the mixing vessel. Oscillation frequency, damping and amplitude are thereby governed by the properties of the porous medium and the target substance. It was shown by column experiments with quartz sand that the appearance of oscillations can be controlled by using different mixing vessel solute volumes. The breakthrough data obtained within these experiments was then used to validate a numerical model that was derived by coupling the numerical solution of a transport equation with the model describing the mixing vessel in a loop. This model was used for a comprehensive sensitivity analysis to illustrate the response of the breakthrough curve to changes in the dispersion and the parameters describing adsorption with respect to strength, rate and nonlinearity. Each process thereby produced unique responses that confirm the high information content of closed-flow breakthrough data, which has shown to intrinsically contain information on the water content and the pumping rate as well. Finally, a numerical analysis of inverse parameter determination revealed a massive decrease in parameter uncertainty under optimal conditions, which renders the approach also highly relevant for practical applications.
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
Download or read book Experimental and Numerical Study of Transient Water Flow and Solute Transport in Layered Saturated unsaturated Porous Media written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flow in Porous Media written by J. Douglas and published by Birkhäuser. This book was released on 2012-12-06 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jim Douglas, Jr.' These proceedings reflect some of the thoughts expressed at the Oberwolfach Con ference on Porous Media held June 21-27, 1992, organized by Jim Douglas, Jr., Ulrich Hornung, and Cornelius J, van Duijn. Forty-five scientists attended the conference, and about thirty papers were presented. Fourteen manuscripts were submitted for the proceedings and are incorporated in this volume; they cover a number of aspects of flow and transport in porous media. Indeed, there are 223 individual references in the fourteen papers, but fewer than fifteen are cited in more than one paper. The papers appear in alphabetical order (on the basis of the first author). A brief introduction to each paper is given below. Allen and Curran consider a variety of questions related to the simulation of ground water contamination. Accurate water velocities are essential for acceptable results, and the authors apply mixed finite elements to the pressure equation to obtain these ve locities. Since fine grids are required to resolve heterogenei ties, standard iterative procedures are too slow for practical simulation; the authors introduce a parallelizable, multigrid-based it.erative scheme for the lowest order Raviart-Thomas mixed method. Contaminant transport is approximated through a finite element collocation procedure, and an alternating-direction, modified method of characteristics technique is employed to time-step the simulation. Computational experiments carried out on an nCube 2 computer.
Download or read book Simulation of Solute Transport Invariably Saturated Porous Media with Supplemental Information on Modifications to the U S Geological Survey s Computer Program VS2D written by R. W. Healy and published by . This book was released on 1990 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non fickian Solute Transport in Porous Media written by Don Kulasiri and published by Springer. This book was released on 2013-04-23 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advection-dispersion equation that is used to model the solute transport in a porous medium is based on the premise that the fluctuating components of the flow velocity, hence the fluxes, due to a porous matrix can be assumed to obey a relationship similar to Fick’s law. This introduces phenomenological coefficients which are dependent on the scale of the experiments. This book presents an approach, based on sound theories of stochastic calculus and differential equations, which removes this basic premise. This leads to a multiscale theory with scale independent coefficients. This book illustrates this outcome with available data at different scales, from experimental laboratory scales to regional scales.
Download or read book Numerical Simulation of Solute Transport in Randomly Heterogeneous Porous Media written by Andrew Francis Burke Tompson and published by . This book was released on 1988 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic Analysis Of Flow And Solute Transport In Heterogeneous Porous Media Using Perturbation Approach written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of flow and solute transport problem in porous media are affected by uncertainty inbuilt both in boundary conditions and spatial variability in system parameters. The experimental investigation reveals that the parameters may vary in various scales by several orders. These affect the solute plume characteristics in field-scale problem and cause uncertainty in the prediction of concentration. The main focus of the present thesis is to analyze the probabilistic behavior of solute concentration in three dimensional(3-D) heterogeneous porous media. The framework for the probabilistic analysis has been developed using perturbation approach for both spectral based analytical and finite element based numerical method. The results of the probabilistic analysis are presented either in terms of solute plume characteristics or prediction uncertainty of the concentration. After providing a brief introduction on the role of stochastic analysis in subsurface hydrology in chapter 1, a detailed review of the literature is presented to establish the existing state-of-art in the research on the probabilistic analysis of flow and transport in simple and complex heterogeneous porous media in chapter 2. The literature review is mainly focused on the methods of solution of the stochastic differential equation. Perturbation based spectral method is often used for probabilistic analysis of flow and solute transport problem. Using this analytical method a nonlocal equation is solved to derive the expression of the spatial plume moments. The spatial plume moments represent the solute movement, spreading in an average sense. In chapter 3 of the present thesis, local dispersivity if also assumed to be random space function along with hydraulic conductivity. For various correlation coefficients of the random parameters, the results in terms of the field scale effective dispersivity are presented to demonstrate the effect of local dispersivity variation in space. The randomness of local.
Download or read book Experimental and Numerical Investigations Into Fundamental Mechanisms Controlling Particle Transport in Saturated Porous Media written by Po-Chieh Liu and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A non-log-linear kinetic sub-model and corresponding micro-scale experiments are needed for better predictions. Moreover, the effects of particle-particle interaction were proven significant in certain conditions, however, the processes is still unclear. Visualization technique introduced in this research is capable to explore the controlling mechanisms in micro-scale and further provides the foundations for developing non-log-linear kinetic model, quantifying the effects of particle-particle interactions, acceleration, and other uncovered physical/chemical factors on particle transport in porous media. Advancing understanding of these factors has potential for improving the prediction of colloidal particle transport under real-world, field conditions, which can benefit many programs aimed at reducing the environmental and health impacts of colloid facilitated contaminant transport.
Download or read book Theoretical and Experimental Study of Solute Movement Through Porous Media with Mobile and Immobile Water written by F. de Smedt and published by . This book was released on 1981 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Essentials of Multiphase Flow and Transport in Porous Media written by George F. Pinder and published by Wiley-Interscience. This book was released on 2008-08-04 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This resource introduces the fundamental concepts that underlie the physics of multiphase flow and transport in porous media. It guides readers logically and step by step from simple concepts to advanced equations useful for addressing real-world problems including infiltration, groundwater contamination, and movement of non-aqueous phase liquids. The text develops governing equations for application to these and other problems in light of the physics that influence system behavior." "Because in-depth knowledge of continuum mechanics, mixture theory, porous media flow, and averaging theory is not assumed, this book is a timely reference for advanced undergraduate students and graduate students; practicing hydrogeologists, engineers, and scientists; and those interested in developing mastery of the important fundamental principles that underlie modeling of multiphase systems."--Jacket
Download or read book Fluids in Porous Media written by Henk Huinink and published by Iop Concise Physics. This book was released on 2016 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the reader into the field of the physics of processes occurring in porous media. It targets Master and PhD students who need to gain fundamental understanding the impact of confinement on transport and phase change processes. The book gives brief overviews of topics like thermodynamics, capillarity and fluid mechanics in order to launch the reader smoothly into the realm of porous media. In-depth discussions are given of phase change phenomena in porous media, single phase flow, unsaturated flow and multiphase flow. In order to make the topics concrete the book contains numerous example calculations. Further, as much experimental data as possible is plugged in to give the reader the ability to quantify phenomena.
Download or read book Numerical Simulation of Flow Through Porous Media microform written by Mohammad Hafiz Hamdan and published by National Library of Canada. This book was released on 1989 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solute Transport in Porous Media written by and published by . This book was released on 1987 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unconditional and Conditional Analysis of Flow and Solute Transport in Variably Saturated Porous Media PHD written by Bailing Li and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
