Heterogeneity And Transport
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Jagtlov Eller Lov Indeholdende Nogle Bestemmelser Angaaende Jagten Og Fredning Af Visse Nyttige Dyr Stadf Stet Af Kong Christian Ix D 1 April 1871
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language : en
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Release Date : 1871
Jagtlov Eller Lov Indeholdende Nogle Bestemmelser Angaaende Jagten Og Fredning Af Visse Nyttige Dyr Stadf Stet Af Kong Christian Ix D 1 April 1871 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1871 with categories.
Heterogeneity And Transport
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Author : Si-Yong Lee
language : en
Publisher:
Release Date : 2004
Heterogeneity And Transport written by Si-Yong Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Consumer Heterogeneity Transport And The Environment
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Author : Yashar Araghi
language : en
Publisher:
Release Date : 2017
Consumer Heterogeneity Transport And The Environment written by Yashar Araghi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Consumer behavior categories.
Effects Of Heterogeneity On Reactive Transport In Geologic Media
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Author : Christopher Terry Green
language : en
Publisher:
Release Date : 2002
Effects Of Heterogeneity On Reactive Transport In Geologic Media written by Christopher Terry Green and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Unobserved Heterogeneity And International Benchmarking In Public Transport
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Author : Astrid Cullmann
language : en
Publisher:
Release Date : 2009
Unobserved Heterogeneity And International Benchmarking In Public Transport written by Astrid Cullmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Role Of Heterogeneity In Flow And Solute Transport
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Author : Hua Zhang
language : en
Publisher:
Release Date : 2005
Role Of Heterogeneity In Flow And Solute Transport written by Hua Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Reservoir Modeling Accounting For Scale Up Of Heterogeneity And Transport Processes
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Author : Juliana Yuk Wing Leung
language : en
Publisher:
Release Date : 2009
Reservoir Modeling Accounting For Scale Up Of Heterogeneity And Transport Processes written by Juliana Yuk Wing Leung and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Reservoir heterogeneities exhibit a wide range of length scales, and their interaction with various transport mechanisms control the overall performance of subsurface flow and transport processes. Modeling these processes at large-scales requires proper scale-up of both heterogeneity and the underlying transport mechanisms. This research demonstrates a new reservoir modeling procedure to systematically quantify the scaling characteristics of transport processes by accounting for sub-scale heterogeneities and their interaction with various transport mechanisms based on the volume averaging approach. Although treatments of transport problems with the volume averaging technique have been published in the past, application to real geological systems exhibiting complex heterogeneity is lacking. A novel procedure, where results from a fine-scale numerical flow simulation reflecting the full physics of the transport process albeit over a small sub-volume of the reservoir, can be integrated with the volume averaging technique to provide effective description of transport at the coarse scale. In a volume averaging procedure, scaled up equations describing solute transport in single-phase flow are developed. Scaling characteristics of effective transport coefficient corresponding to different reservoir heterogeneity correlation lengths as well as different transport mechanisms including convection, dispersion, and diffusion are studied. The method is subsequently extended to describe transport in multiphase systems to study scaling characteristics of processes involving adsorption and inter-phase transport. Key conclusions drawn from this dissertation show that 1) variance of reservoir properties and flow responses generally decrease with scale; 2) scaling of recovery processes can be described by the scaling of effective mass transfer coefficient (Keff); in particular, mean and variance of Keff decrease with length scale, similar in the fashion of recovery statistics (e.g., variances in tracer breakthrough time and recovery); 3) the scaling of Keff depends on the underlying heterogeneity and is influenced by the dominant transport mechanisms. To show the versatility of the approach for studying scale-up of other transport mechanisms, it is also applied to derive scaled up formulations of non-Newtonian polymer flow to investigate the scaling characteristics of the apparent viscosity and effective shear rate in porous media.
Unobserved Heterogeneity And International Benchmarking In Public Transport
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language : en
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Unobserved Heterogeneity And International Benchmarking In Public Transport written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
We analyze the technical efficiency of German and Swiss urban public transport companies by means of SFA. In transport networks we might face different network structures or complexities, not observed, but influencing the production process. The unobserved factors are typically modeled as separable factors. However, we argue that the entire production process is organized around different network structures. Therefore, they are inevitably non-separable from the observed inputs and outputs. The adopted econometric model is a random coefficient stochastic frontier model. We estimate an input distance function for the years 1991 to 2006. The results underline the presence of unobserved non-separable factors.
Mathematical Formulations Of Water Mixing For Reactive Transport Through Heterogeneous Media
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Author : Joaquim Soler Sagarra
language : en
Publisher:
Release Date : 2020
Mathematical Formulations Of Water Mixing For Reactive Transport Through Heterogeneous Media written by Joaquim Soler Sagarra and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
The study of transport of reacting solute through aquifers is relevant in many engineering fields. Reactive transport (RT) is complex because it consists of two phenomena, solute transport and chemical reactions, both of which are affected by heterogeneity. Because of this complexity, RT is solved by using numerical methods obtained from mathematical formulations. This thesis seeks to improve these mathematical formulations for RT and, specifically, to (a) provide a formulation that recognizes the heterogeneity of transport and chemistry at different scales and (b) improve the algorithms to solve RT. The thesis proposes using water exchange to describe mixing, which controls fast chemical reactions. This choice leads to a family of formulations. The Water Mixing Approach (WMA) is initially proposed as an efficient formulation equivalent to the Advection Dispersion equation (ADE). Multi-Rate Water Mixing (MRWM) is employed to account explicitly for chemical heterogeneity. Finally, the Multi-Advective Water Mixing Approach (MAWMA) allows distinguishing between dispersion, driven by hydraulic heterogeneity, and mixing, driven by both hydraulic heterogeneity and diffusion. In all these formulations, the entire transport phenomenon may be modeled as water processes. This implies that solute concentration becomes an attribute of water, exclusively relevant for chemical phenomena that become decoupled from transport. The accuracy of these formulations is tested in several cases.
Heterogeneity Effects In Neutron Transport Computations
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Author :
language : en
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Release Date : 1975
Heterogeneity Effects In Neutron Transport Computations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.