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Heterogeneous Media

Heterogeneous Media
  • Author : Konstantin Markov,Luigi Preziosi
  • Publisher :Unknown
  • Release Date :2012-10-23
  • Total pages :477
  • ISBN : 1461270987
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Summary : Most materials used in contemporary life and industry are heterogeneous (composites) and multicomponent, possessing a rich and complex internal structure. This internal structure, or microstructure, plays a key role in understanding and controlling the continuum behavior, or macroscopic, of a wide variety of materials. The modeling process is a critical tool for scientists and engineers studying the analysis and experimentation for the micromechanics and behavior of these materials. "Heterogeneous Media" is a critical, in-depth edited survey of the major topics surrounding the modeling and analysis of problems in micromechanics of multicomponent systems, including conceptual and practical aspects. The goal of this extensive and comprehensive survey is to provide both specialists and nonspecialists with an authoritative and interdisciplinary perspective of current ideas and methods used for modeling heterogeneous materials behavior and their applications. Topics and Features: * all chapters use interdisciplinary modeling perspective for investigating heterogeneous media*Five chapters provide self-contained discussions, with background provided*Focuses only upon most important techniques and models, fully exploring micro-macro interconnections*extensive introductory survey chapter on micromechanics of heterogeneous media*microstructure characterization via statistical correlation functions*micro-scale deformation of pore space*wave fields and effective dynamical properties*modeling of the complex production technologies for composite materials The book is ideal for a general scientific and engineering audience needing an in-depth view and guide to current ideas, methods and

Thermal Non-Equilibrium in Heterogeneous Media

Thermal Non-Equilibrium in Heterogeneous Media
  • Author : Marcelo J.S. de Lemos
  • Publisher :Unknown
  • Release Date :2015-10-16
  • Total pages :108
  • ISBN : 9783319146669
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Summary : This book presents, in a self-contained fashion, a series of studies on flow and heat transfer in porous media, in which distinct energy balances are considered for the porous matrix and for the permeating fluid. Detailed mathematical modeling is presented considering both volume and time averaging operators simultaneously applied to the governing equations. System involving combustion in the gaseous phase, moving bed and double-diffusion mechanism are analyzed. Numerical results are presented for each case. In the end, this book contains the description of a tool that might benefit engineers in developing and designing more efficient thermal equipment.

Heterogeneous Media

Heterogeneous Media
  • Author : Sergey Kanaun
  • Publisher :Unknown
  • Release Date :2020-09-25
  • Total pages :494
  • ISBN : 9780128198810
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Summary : Heterogeneous Media: Local Fields, Effective Properties, and Wave Propagation outlines new computational methods for solving volume integral equation problems in heterogeneous media. The book starts by surveying the various numerical methods of analysis of static and dynamic fields in heterogeneous media, listing their strengths and weaknesses, before moving onto an introduction of static and dynamic green functions for homogeneous media. Volume and surface integral equations for fields in heterogenous media are discussed next, followed by an overview of explicit formulas for numerical calculations of volume and surface potentials. The book then segues into Gaussian functions for discretization of volume integral equations for fields in heterogenous media, static problems for a homogeneous host medium with heterogeneous inclusions, volume integral equations for scattering problems, and concludes with a chapter outlining solutions to homogenization problems and calculations of effective properties of heterogeneous media. The book concludes with multiple appendices that feature the texts of basic programs for solving volume integral equations as written in Mathematica. Outlines cutting-edge computational methods for solving volume integral equation problems in heterogeneous media Provides applied examples of approximation and other methods being employed Demonstrates calculation of composite material properties and the constitutive laws for averaged fields within them Covers static and dynamic 2D and 3D mechanical-mathematical models for heterogeneous media

Diffusion and Reaction in Heterogeneous Media

Diffusion and Reaction in Heterogeneous Media
  • Author : Jesus Alberto Ochoa
  • Publisher :Unknown
  • Release Date :1988
  • Total pages :950
  • ISBN : UCAL:X34320
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Summary :

Shock waves in condensed matter and heterogeneous media

Shock waves in condensed matter and heterogeneous media
  • Author : Raymond Brun,Lucien Z. Dumitrescu
  • Publisher :Unknown
  • Release Date :1995
  • Total pages :485
  • ISBN : 3540577122
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Summary : Recently, there have been significant advances in the fields of high-enthalpy hypersonic flows, high-temperature gas physics, and chemistry shock propagation in various media, industrial and medical applications of shock waves, and shock-tube technology. This series contains all the papers and lectures of the 19th International Symposium on Shock Waves held in Marseille in 1993. They are published in four topical volumes, each containing papers on related topics, and preceded by an overview wrtitten by a leading international expert. The volumes may be purchased independently.

DIFFUSION LENGTHS IN HETEROGENEOUS MEDIA

DIFFUSION LENGTHS IN HETEROGENEOUS MEDIA
  • Author : JOEL H. FERSIGER
  • Publisher :Unknown
  • Release Date :1960
  • Total pages :229
  • ISBN : UOMDLP:bac2036:0001.001
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Summary :

Asymptotic Wave Methods in Heterogeneous Media

Asymptotic Wave Methods in Heterogeneous Media
  • Author : Wafik B. Beydoun
  • Publisher :Unknown
  • Release Date :1985
  • Total pages :520
  • ISBN : STANFORD:36105033017992
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Summary :

A Continuum Theory of Heterogeneous Media

A Continuum Theory of Heterogeneous Media
  • Author : Jin Moo Park
  • Publisher :Unknown
  • Release Date :1983
  • Total pages :128
  • ISBN : UCAL:C2935220
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Summary :

Study of Transport Coefficients in Heterogeneous Media by Monte Carlo Simulation

Study of Transport Coefficients in Heterogeneous Media by Monte Carlo Simulation
  • Author : Kayode Ashimi Akanni
  • Publisher :Unknown
  • Release Date :1986
  • Total pages :426
  • ISBN : UCAL:C2931478
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Summary :

Application of Radiation Transport Methods to Small Field Dosimetry in Heterogeneous Media

Application of Radiation Transport Methods to Small Field Dosimetry in Heterogeneous Media
  • Author : Timothy David Solberg
  • Publisher :Unknown
  • Release Date :1996
  • Total pages :454
  • ISBN : UCLA:L0075670927
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Summary :

Heterogeneous Media

Heterogeneous Media
  • Author : Konstantin Markov,Luigi Preziosi
  • Publisher :Unknown
  • Release Date :2012-12-06
  • Total pages :477
  • ISBN : 9781461213321
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Summary : Most materials used in contemporary life and industry are heterogeneous (composites) and multicomponent, possessing a rich and complex internal structure. This internal structure, or microstructure, plays a key role in understanding and controlling the continuum behavior, or macroscopic, of a wide variety of materials. The modeling process is a critical tool for scientists and engineers studying the analysis and experimentation for the micromechanics and behavior of these materials. "Heterogeneous Media" is a critical, in-depth edited survey of the major topics surrounding the modeling and analysis of problems in micromechanics of multicomponent systems, including conceptual and practical aspects. The goal of this extensive and comprehensive survey is to provide both specialists and nonspecialists with an authoritative and interdisciplinary perspective of current ideas and methods used for modeling heterogeneous materials behavior and their applications. Topics and Features: * all chapters use interdisciplinary modeling perspective for investigating heterogeneous media*Five chapters provide self-contained discussions, with background provided*Focuses only upon most important techniques and models, fully exploring micro-macro interconnections*extensive introductory survey chapter on micromechanics of heterogeneous media*microstructure characterization via statistical correlation functions*micro-scale deformation of pore space*wave fields and effective dynamical properties*modeling of the complex production technologies for composite materials The book is ideal for a general scientific and engineering audience needing an in-depth view and guide to current ideas, methods and

Flow Through Heterogeneous Geological Media

Flow Through Heterogeneous Geological Media
  • Author : Tian-Chyi Yeh,Raziuddin Khaleel,Kenneth C. Carroll
  • Publisher :Unknown
  • Release Date :2015-07-07
  • Total pages :400
  • ISBN : 9781107076136
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Summary : Integrates principles of flow through porous media with stochastic analyses, for advanced-level students, researchers and professionals in hydrogeology and hydraulics.

Modeling flow and transport in heterogeneous media

Modeling flow and transport in heterogeneous media
  • Author : Ramoj K. Paruchuri
  • Publisher :Unknown
  • Release Date :2003
  • Total pages :322
  • ISBN : OCLC:54771013
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Summary :

Anomaly Detection in Random Heterogeneous Media

Anomaly Detection in Random Heterogeneous Media
  • Author : Martin Simon
  • Publisher :Unknown
  • Release Date :2015-07-30
  • Total pages :150
  • ISBN : 3658109920
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Summary : This monograph is concerned with the analysis and numerical solution of a stochastic inverse anomaly detection problem in electrical impedance tomography (EIT). Martin Simon studies the problem of detecting a parameterized anomaly in an isotropic, stationary and ergodic conductivity random field whose realizations are rapidly oscillating. For this purpose, he derives Feynman-Kac formulae to rigorously justify stochastic homogenization in the case of the underlying stochastic boundary value problem. The author combines techniques from the theory of partial differential equations and functional analysis with probabilistic ideas, paving the way to new mathematical theorems which may be fruitfully used in the treatment of the problem at hand. Moreover, the author proposes an efficient numerical method in the framework of Bayesian inversion for the practical solution of the stochastic inverse anomaly detection problem.

Anomalous Dynamics of Darcy Flow and Diffusion Through Heterogeneous Media

Anomalous Dynamics of Darcy Flow and Diffusion Through Heterogeneous Media
  • Author : Anna Russian
  • Publisher :Unknown
  • Release Date :2013
  • Total pages :178
  • ISBN : OCLC:1120401685
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Summary : This thesis studies diffusion phenomena in heterogeneous media, which includes Darcy flow and diffusive solute transport in geological media. Natural media are heterogeneous at different scales, which induces complexity in diffusion phenomena. The work is centered on the integration of the effects of heterogeneity on Darcy flow and solute diffusion into large scale models. The quantification of the effects of heterogeneity in diffusion phenomena is highly important for a large number of problems such as diffusion and reaction of chemicals and radionuclides in low permeability media, which is essential in subsurface hazardous waste storage problems, CO2 sequestration performance and groundwater management. In a stochastic framework we quantify the effects of heterogeneity in large scale models considering two interrelated strategies that can be called Ôcoefficient approachÕ, which deals with the derivation of effective coefficients to insert in equivalent homogeneous models, and Ôdynamic approachÕ, which deals with the upscaling of the local scale equations and the derivation of large scale formulations which can differ from their local counterparts. Whenever a diffusion process cannot be described in terms of effective coefficient, that behaviour is named anomalous or non-Fickian. Anomalous diffusion behaviours observed experimentally are frequently modelled by effective theories such as fractional diffusion equations, continuous time random walks. One limitation of these models is that often they are rather phenomenological and the relation to the local scale heterogeneity and dynamics may not be clear. In the dynamic approach we derive large scale descriptions that can explain anomalous behaviour and link it with a description of the local scale medium heterogeneity. To this end, we upscale the local scale governing equations using different methods depending on the type of medium heterogeneity. For moderately heterogeneous media we upscale flow equation by stochastic averaging. Starting from the classical flow equation at local scale determined by Darcy's law, we derive an upscaled non-local effective formulation. The non-local effective formulation is compared with its local counterpart by considering the head response for a pulse injection. Numerically, we solve flow and diffusion in heterogeneous media using particle tracking methods. While classical random walk particle tracking is an efficient numerical tool to solve for diffusion problems in moderately heterogeneous media, strong medium contrasts, as encountered in fractured media, render this method inefficient. For highly heterogeneous media efficiency of classical random walk can be increased by the use of the time domain random walk (TDRW) method. We rigorously derive the equivalence of the TDRW algorithm and the diffusion equation and we extend the classical TDRW method to solve diffusion problem in a heterogeneous medium with multi-rate mass transfer properties. Moreover we use the TDRW method in connection with a stochastic model for the heterogeneity in order to upscale heterogeneous diffusion processes. For a certain class of heterogeneity, the upscaled dynamics obey a CTRW. Analytically we upscale diffusion in highly heterogeneous media by using a multicontinuum representation of the media. Using volume and ensemble averaging we derive a multicontinuum model that can explain anomalous diffusion behavior and link it with a suitable local scale description of the medium heterogeneity. Finally, we integrate the multicontinuum model derived in the context of aquifer modelling. We derive a multicontinuum catchment model that can explain anomalous behavior observed in the aquifer dynamics at basin scale. We identify the physical mechanisms that induce anomalous behaviour and we determine the time scales that control its temporal evolution.

Solute Non-equilibrium Transport in Heterogeneous Porous Media

Solute Non-equilibrium Transport in Heterogeneous Porous Media
  • Author : Wenlin Chen
  • Publisher :Unknown
  • Release Date :1994
  • Total pages :328
  • ISBN : CORNELL:31924074117577
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Summary :

Computational High Frequency Waves in Heterogeneous Media

Computational High Frequency Waves in Heterogeneous Media
  • Author : Xiaomei Liao
  • Publisher :Unknown
  • Release Date :2007
  • Total pages :93
  • ISBN : WISC:89096163415
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Summary :

Random Heterogeneous Materials

Random Heterogeneous Materials
  • Author : Salvatore Torquato
  • Publisher :Unknown
  • Release Date :2013-04-17
  • Total pages :703
  • ISBN : 9781475763553
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Summary : This accessible text presents a unified approach of treating the microstructure and effective properties of heterogeneous media. Part I deals with the quantitative characterization of the microstructure of heterogeneous via theoretical methods; Part II treats a wide variety of effective properties of heterogeneous materials and how they are linked to the microstructure, accomplished by using rigorous methods.

Shock Waves @ Marseille III

Shock Waves @ Marseille III
  • Author : Raymond Brun,Lucien Z. Dumitrescu
  • Publisher :Unknown
  • Release Date :2012-12-06
  • Total pages :485
  • ISBN : 9783642788352
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Summary : Recently, there have been significant advances in the fields of high-enthalpy hypersonic flows, high-temperature gas physics, and chemistry shock propagation in various media, industrial and medical applications of shock waves, and shock-tube technology. This series contains all the papers and lectures of the 19th International Symposium on Shock Waves held in Marseille in 1993. They are published in four topical volumes, each containing papers on related topics, and preceded by an overview wrtitten by a leading international expert. The volumes may be purchased independently.

The Seismics of Heterogeneous and Turbid Media

The Seismics of Heterogeneous and Turbid Media
  • Author : Alekseĭ Vsevolodovich Nikolaev
  • Publisher :Unknown
  • Release Date :1975
  • Total pages :140
  • ISBN : UIUC:30112118023917
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Summary :

Scale-up of Reactive Processes in Heterogeneous Media

Scale-up of Reactive Processes in Heterogeneous Media
  • Author : Harpreet Singh
  • Publisher :Unknown
  • Release Date :2014
  • Total pages :438
  • ISBN : OCLC:903490735
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Summary : Physical and chemical heterogeneities cause the porous media transport parameters to vary with scale, and between these two types of heterogeneities geological heterogeneity is considered to be the most important source of scale-dependence of transport parameters. Subsurface processes associated with chemical alterations result in changing reservoir properties with interlinked spatial and temporal scale, and there is uncertainty in the evolution of those properties and the chemical processes. This dissertation provides a framework and procedures to quantify the spatiotemporal scaling characteristics of reservoir attributes and transport processes in heterogeneous media accounting for chemical alterations in the reservoir. Conventional flow scaling groups were used to assess their applicability in scaling of recovery and Mixing Zone Length (MZL) in presence of chemical reactivity and permeability heterogeneity through numerical simulations of CO2 injection. It was found out that these scaling groups are not adequate enough to capture the scaling of recovery and transport parameters in the combined presence of chemical reactivity and physical heterogeneity. In this illustrative example, MZL was investigated as a function of spatial scale, temporal scale, multi-scale heterogeneity, and chemical reactivity; key conclusions are that 1) the scaling characteristics of MZL distinctly differ for low permeability and high permeability media, 2) heterogeneous media with spatial arrangements of both high and low permeability regions exhibit scaling characteristics of both high and low permeability media, 3) reactions affect scaling characteristics of MZL in heterogeneous media, 4) a simple rescaling can combine various MZL curves by merging them into a single MZL curve irrespective of the correlation length of heterogeneity, and 5) estimates of MZL (and consequently predictions of oil recovery) will fluctuate corresponding to displacements in a permeable medium whose lateral length is smaller than the correlation length of geological formation. We illustrate and extend the procedure of estimating Representative Elementary Volume (REV) to include temporal scale by coupling it with spatial scale. The current practice is to perform spatial averaging of attributes and account for residual variability by calibration and history matching. This results in poor predictions of future reservoir performance. The proposed semi-analytical technique to scale-up in both space and time provides guidance for selection of spatial and temporal discretizations that takes into account the uncertainties due to sub-processes. Finally, a probabilistic particle tracking (PT) approach is proposed to scale-up flow and transport of diffusion-reaction (DR) processes while addressing multi-scale and multi-physics nature of DR mechanisms and also maintaining consistent reservoir heterogeneity at different levels of scales. This multi-scale modeling uses a hierarchical approach which is based on passing the macroscopic subsurface heterogeneity down to the finer scales and then returning more accurate reactive flow response. This PT method can quantify the impact of reservoir heterogeneity and its uncertainties on statistical properties such as reaction surface area and MZL, at various scales.