Transport Réactif en Milieux Poreux Fracturé

Transport Réactif en Milieux Poreux Fracturé PDF Author: Lukasz Jasinski
Publisher:
ISBN:
Category :
Languages : en
Pages : 185

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Book Description
This work addresses flow and reactive solute transport in fractured porous media on a mesoscopic scale by direct numerical simulations in a discrete fracture model (DFM). The model is three-dimensional. The numerical scheme is based on a finite volume formulation, with implementation of a flux limiting scheme of the SuperBee type in order to minimize numerical dispersion. Particular attention is paid to the triple control volume formulation and exchanges between the porous matrix and the fractures which allow for a precise description of the flow and the transport processes even when the contrast between the fractures and porous matrix transmissivities is high. Various physical situations and applications are studied, ranging from the analysis of the simple cases of passive and reactive transport in the unfractured matrix, transfer between disk shaped fracture to the embedding porous matrix, to more complex ones such as induction between fractures in the porous medium. Finally, full simulations of passive and reactive solute transport in long rods of porous matrix containing percolating or non percolating fracture networks are conducted and analyzed.

Transport Réactif en Milieux Poreux Fracturé

Transport Réactif en Milieux Poreux Fracturé PDF Author: Lukasz Jasinski
Publisher:
ISBN:
Category :
Languages : en
Pages : 185

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Book Description
This work addresses flow and reactive solute transport in fractured porous media on a mesoscopic scale by direct numerical simulations in a discrete fracture model (DFM). The model is three-dimensional. The numerical scheme is based on a finite volume formulation, with implementation of a flux limiting scheme of the SuperBee type in order to minimize numerical dispersion. Particular attention is paid to the triple control volume formulation and exchanges between the porous matrix and the fractures which allow for a precise description of the flow and the transport processes even when the contrast between the fractures and porous matrix transmissivities is high. Various physical situations and applications are studied, ranging from the analysis of the simple cases of passive and reactive transport in the unfractured matrix, transfer between disk shaped fracture to the embedding porous matrix, to more complex ones such as induction between fractures in the porous medium. Finally, full simulations of passive and reactive solute transport in long rods of porous matrix containing percolating or non percolating fracture networks are conducted and analyzed.

Theoretical and Numerical Unsaturated Soil Mechanics

Theoretical and Numerical Unsaturated Soil Mechanics PDF Author: Tom Schanz
Publisher: Springer Science & Business Media
ISBN: 3540698760
Category : Technology & Engineering
Languages : en
Pages : 229

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Book Description
These proceedings are a continuation of the series of International Conferences in Germany entitled "Mechanics of Unsaturated Soils." The primary objective is to discuss and understand unsaturated soil behaviour such that engineered activities are made better with times in terms of judgment and quality. The proceedings contain recent research by leading experts in Mechanics of Unsaturated Soils.

Simulation du transport réactif dans un milieu poreux discrètement fracturé

Simulation du transport réactif dans un milieu poreux discrètement fracturé PDF Author:
Publisher:
ISBN:
Category :
Languages : fr
Pages :

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Simulation du transport réactif dans un milieu poreux discrètement fracturé [microforme]

Simulation du transport réactif dans un milieu poreux discrètement fracturé [microforme] PDF Author: Frédéric Ghogomu Ngouh
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN:
Category :
Languages : fr
Pages : 360

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Book Description


Geochemical Modeling of Groundwater, Vadose and Geothermal Systems

Geochemical Modeling of Groundwater, Vadose and Geothermal Systems PDF Author: Jochen Bundschuh
Publisher: CRC Press
ISBN: 0415668107
Category : Technology & Engineering
Languages : en
Pages : 336

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Book Description
Geochemical modeling is an important tool in environmental studies, and in the areas of subsurface and surface hydrology, pedology, water resources management, mining geology, geothermal resources, hydrocarbon geology, and related areas dealing with the exploration and extraction of natural resources. The book fills a gap in the literature through its discussion of geochemical modeling, which simulates the chemical and physical processes affecting the distribution of chemical species in liquid, gas, and solid phases. Geochemical modeling applies to a diversity of subsurface environments, from the vadose zone close to the Earth’s surface, down to deep-seated geothermal reservoirs. This book provides the fundamental thermodynamic concepts of liquid-gas-solid phase systems. It introduces the principal types of geochemical models, such as speciation, reaction-path or forward, inverse- and reactive-transport models, together with examples of the most common codes and the best-practices for constructing geochemical models. The physical laws describing homogeneous and heterogeneous chemical reactions, their kinetics, and the transport of reactive solutes are presented. The partial differential or algebraic equations representing these laws, and the principal numerical methods that allow approximate solutions of these equations that can provide useful solutions to model different geochemical processes, are discussed in detail. Case studies applying geochemical models in different scientific areas and environmental settings, conclude the book. The book is addressed to students, teachers, other professionals, and to the institutions involved in water, geothermal and hydrocarbon resources, mining, and environmental management. The book should prove useful to undergraduate and graduate students, postgraduates, professional geologists and geophysicists, engineers, environmental scientists, soil scientists, hydrochemists, and others interested in water and geochemistry.

Selected Water Resources Abstracts

Selected Water Resources Abstracts PDF Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 806

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Oil & Gas Science and Technology

Oil & Gas Science and Technology PDF Author:
Publisher:
ISBN:
Category : Liquid fuels
Languages : en
Pages : 1106

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Dissertation Abstracts International

Dissertation Abstracts International PDF Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 854

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Book Description


Geological Storage of CO2 in Deep Saline Formations

Geological Storage of CO2 in Deep Saline Formations PDF Author: Auli Niemi
Publisher: Springer
ISBN: 9402409963
Category : Science
Languages : en
Pages : 567

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Book Description
This book offers readers a comprehensive overview, and an in-depth understanding, of suitable methods for quantifying and characterizing saline aquifers for the geological storage of CO2. It begins with a general overview of the methodology and the processes that take place when CO2 is injected and stored in deep saline-water-containing formations. It subsequently presents mathematical and numerical models used for predicting the consequences of CO2 injection. This book provides descriptions of relevant experimental methods, from laboratory experiments to field scale site characterization and techniques for monitoring spreading of the injected CO2 within the formation. Experiences from a number of important field injection projects are reviewed, as are those from CO2 natural analog sites. Lastly, the book presents relevant risk management methods. Geological storage of CO2 is widely considered to be a key technology capable of substantially reducing the amount of CO2 released into the atmosphere, thereby reducing the negative impacts of such releases on the global climate. Around the world, projects are already in full swing, while others are now being initiated and executed to demonstrate the technology. Deep saline formations are the geological formations considered to hold the highest storage potential, due to their abundance worldwide. To date, however, these formations have been relatively poorly characterized, due to their low economic value. Accordingly, the processes involved in injecting and storing CO2 in such formations still need to be better quantified and methods for characterizing, modeling and monitoring this type of CO2 storage in such formations must be rapidly developed and refined.

Selected Water Resources Abstracts

Selected Water Resources Abstracts PDF Author:
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 1194

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Book Description