Wetting Front Instability in Layered Unsaturated Porous Media PDF Download
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Author: Robert John Glass
Publisher:
ISBN:
Category : Porous materials
Languages : en
Pages : 416
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Book Description
Author: Robert John Glass
Publisher:
ISBN:
Category : Porous materials
Languages : en
Pages : 416
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Book Description
Author: Blake Paul Tullis
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
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Author: Robert J. Glass
Publisher:
ISBN:
Category : Fluid mechanics
Languages : en
Pages : 352
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Book Description
Author: Timothy M. Kelly
Publisher:
ISBN:
Category : Hazardous waste site remediation
Languages : en
Pages : 414
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Book Description
Author: Glen A. Diment
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 414
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Author: David Glenn Chandler
Publisher:
ISBN:
Category :
Languages : en
Pages : 170
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Author: John S. Selker
Publisher:
ISBN:
Category :
Languages : en
Pages : 512
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Wetting front instability is an important phenomenon affecting fluid flow and contaminant transport in unsaturated soils and rocks. It causes the development of fingers which travel faster than would a uniform front and thus bypass much of the medium. Water saturation and solute concentration in such fingers tend to be higher than in the surrounding medium. During infiltration, fingering may cause unexpectedly rapid arrival of water and solute at the water-table. This notwithstanding, most models of subsurface flow and transport ignore instability and fingering. In this report, we survey the literature to assess the extent to which this may or may not be justified. Our overview covers experiments, theoretical studies, and computer simulations of instability and fingering during immiscible two-phase flow and transport, with emphasis on infiltration into soils and fractured rocks. Our description of instability in an ideal fracture (Hele-Shaw cell) includes an extension of existing theory to fractures and interfaces having arbitrary orientations in space. Our discussion of instability in porous media includes a slight but important correction of existing theory for the case of an inclined interface. We conclude by outlining some potential directions for future research. Among these, we single out the effect of soil and rock heterogeneities on instability and preferential flow as meriting special attention in the context of nuclear waste storage in unsaturated media.
Author: D.B. Das
Publisher: Springer Science & Business Media
ISBN: 1402036043
Category : Science
Languages : en
Pages : 259
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Book Description
This book provides concise, up-to-date and easy-to-follow information on certain aspects of an ever important research area: multiphase flow in porous media. This flow type is of great significance in many petroleum and environmental engineering problems, such as in secondary and tertiary oil recovery, subsurface remediation and CO2 sequestration. This book contains a collection of selected papers (all refereed) from a number of well-known experts on multiphase flow. The papers describe both recent and state-of-the-art modeling and experimental techniques for study of multiphase flow phenomena in porous media. Specifically, the book analyses three advanced topics: upscaling, pore-scale modeling, and dynamic effects in multiphase flow in porous media. This will be an invaluable reference for the development of new theories and computer-based modeling techniques for solving realistic multiphase flow problems. Part of this book has already been published in a journal. Audience This book will be of interest to academics, researchers and consultants working in the area of flow in porous media.
Author: Jan M. H. Hendrickx
Publisher:
ISBN:
Category : Groundwater flow
Languages : en
Pages : 52
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Book Description
