Wicking in Porous Materials

Traditional and Modern Modeling Approaches

Author: Reza Masoodi,Krishna M. Pillai

Publisher: CRC Press

ISBN: 1439874328

Category: Technology & Engineering

Page: 380

View: 6723

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A comprehensive presentation of wicking models developed in academia and industry, Wicking in Porous Materials: Traditional and Modern Modeling Approaches contains some of the most important approaches and methods available, from the traditional Washburn-type models to the latest Lattice-Boltzmann approaches developed during the last few years. It provides a sound conceptual framework for learning the science behind different mathematical models while at the same time being aware of the practical issues of model validation as well as measurement of important properties and parameters associated with various models. Top experts in the field reveal the secrets of their wicking models. The chapters cover the following topics: Wetting and wettability Darcy’s law for single- and multi-phase flows Traditional capillary models, such as the Washburn-equation based approaches Unsaturated-flow based methodologies (Richard’s Equation) Sharp-front (plug-flow) type approaches using Darcy’s law Pore network models for wicking after including various micro-scale fluid-flow phenomena Studying the effect of evaporation on wicking using pore network models Fractal-based methods Modeling methods based on mixture theory Lattice-Boltzmann method for modeling wicking in small scales Modeling wicking in swelling and non-rigid porous media This extensive look at the modeling of porous media compares various methods and treats traditional topics as well as modern technologies. It emphasizes experimental validation of modeling approaches as well as experimental determination of model parameters. Matching models to particular media, the book provides guidance on what models to use and how to use them.

Thermal and Moisture Transport in Fibrous Materials

Author: N Pan,P Gibson

Publisher: Woodhead Publishing

ISBN: 1845692268

Category: Technology & Engineering

Page: 632

View: 6349

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The transfer of heat and moisture through textiles is vital to the manufacture and design of clothing, technical and protective textiles. Continued advances in textile processing technology, the growth of manufactured nonwovens and the application of nanotechnology have resulted in a wealth of research in order to characterise the behaviour of these materials. Thermal and moisture transport in fibrous materials provides a comprehensive guide of the technological developments and scientific understanding in this area. The first section summarises the structure, geometry and stereology of fibrous materials. The fundamentals of wetting and its dynamics are also discussed. Part two analyses thermal and liquid interactions in textiles and offers insights into the thermodynamic behaviour of moisture as well as heat and moisture coupling. The book concludes with chapters on the human thermoregulatory system, interfacing between fibrous materials and the human body and innovative computer modelling simulations. Thermal and moisture transport in fibrous materials is an essential reference for all those involved in the textile industry, especially those concerned with the design and manufacture of technical textiles and protective clothing. Summarises the structure, geometry and stereology of fibrous materials Discusses the fundamentals of wetting and its dynamics Analyses thermal and liquid interactions in textiles

Handbook of Porous Media, Third Edition

Author: Kambiz Vafai

Publisher: CRC Press

ISBN: 1439885575

Category: Science

Page: 959

View: 3148

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Handbook of Porous Media, Third Edition offers a comprehensive overview of the latest theories on flow, transport, and heat-exchange processes in porous media. It also details sophisticated porous media models which can be used to improve the accuracy of modeling in a variety of practical applications. Featuring contributions from leading experts in their respective fields, this book: Presents the general characteristics and modeling of porous media, such as multiscale modeling of porous media, two-phase flow, compressible porous media, and dispersion in porous media Addresses the fundamental topics of transport in porous media, including theoretical models of transport, membrane transport phenomena, modeling transport properties, and transport in biomedical applications Describes several important aspects of turbulence in porous media, including advances in modeling turbulence phenomena in heterogeneous porous media Explores heat transfer of nanofluids as well as thermal transport in porous media, including forced convection, double diffusive convection, high-heat flux applications, and thermal behavior of poroelastic media Covers geological applications in porous media, including modeling and experimental challenges related to oil fields, CO2 migration, groundwater flows, and velocity measurements Discusses relevant attributes of experimental work or numerical techniques whenever applicable Paving the way for the establishment of multidisciplinary areas of research, Handbook of Porous Media, Third Edition further enhances cooperation between engineers and scientists by providing a valuable reference for addressing some of the most challenging issues in engineering and the hydrogeological, biological, and biomedical sciences.

An Introduction to Interfaces & Colloids

The Bridge to Nanoscience

Author: John C. Berg

Publisher: World Scientific

ISBN: 9814293075

Category: Science

Page: 785

View: 9286

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Offers an introduction to the topics in interfacial phenomena, colloid science or nanoscience. Designed as a pedagogical tool, this book recognizes the cross-disciplinary nature of the subject. It features descriptions of experiments and contains figures and illustrations that enhance the understanding of concepts.

Fractured Porous Media

Author: Pierre M. Adler,Jean-François Thovert,Valeri V. Mourzenko

Publisher: Oxford University Press

ISBN: 0199666512

Category: Science

Page: 175

View: 8237

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This monograph on fractures, fracture networks, and fractured porous media provides a systematic treatment of their geometrical and transport properties for students and professionals in Geophysics, Materials Science, and Earth Sciences.

Porous Media

Theory, Properties and Applications

Author: Doris Wolfe

Publisher: Nova Publishers

ISBN: 9781634854528

Category:

Page: 150

View: 1618

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This book provides research on theories, properties and applications of porous media. Chapter One considers non-standard models of multi-component adsorption with applications to gas adsorption processes in coalbeds. Chapter Two discusses the influence of temperature dependent thermal conductivity on non-darcy flow and heat transfer in a vertical rectangular duct. Chapter Three investigates the effects of different modes of evaporation on the time-dependent wicking behavior of liquids into a porous strip. Chapter Four deals with the study of dispersion of a solute for porous medium in a vertical double-passage channel with first order chemical reaction. Chapter Five investigates the effect of partial slip viscous flow over a stretching sheet with suction/injection in a porous medium. In Chapter Six, the onset of nanofluid convection in a Walters B fluid-saturated horizontal porous layer is studied.

Essentials of Heat and Fluid Flow in Porous Media

Author: Arunn Narasimhan

Publisher: CRC Press

ISBN: 9781466571082

Category: Science

Page: 301

View: 2072

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Knowledge of heat and fluid flow through porous media finds extensive applications in several engineering devices spanning four major divisions: mechanical, civil, chemical, and bioengineering. This textbook fills the knowledge-gap between available research monographs in porous media and basic thermo-fluids courses required to understand such monographs. Coverage includes fluid flow, conduction, convection, and radiation in porous media as well as porous medium aspects of biological systems. The book includes end-of-chapter problems and an appendix of useful convection correlations.

Porous Media

Applications in Biological Systems and Biotechnology

Author: Kambiz Vafai

Publisher: CRC Press

ISBN: 9781420065428

Category: Medical

Page: 632

View: 9802

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Presenting state-of-the-art research advancements, Porous Media: Applications in Biological Systems and Biotechnology explores innovative approaches to effectively apply existing porous media technologies to biomedical applications. In each peer-reviewed chapter, world-class scientists and engineers collaborate to address significant problems and discuss exciting research in biological systems. The book begins with discussions on bioheat transfer equations for blood flows and surrounding biological tissue, the concept of electroporation, hydrodynamic modeling of tissue-engineered material, and the resistance of microbial biofilms to common modalities of antibiotic treatments. It examines how biofilms influence porous media hydrodynamics, describes the modeling of flow changes in cerebral aneurysms, and highlights recent advances in Lagrangian particles methods. The text also covers passive mass transport processes in cellular membranes and their biophysical implications, the modeling and treatment of mass transport through skin, the use of porous media in marine microbiology, the transport of large biological molecules in deforming tissues, and applications of magnetic stabilized beds for protein purification and adsorption, antibody removal, and more. The final chapters present potential in situ characterization techniques for studying porous media and conductive membranes and explain the development of bioconvection patterns generated by populations of gravitactic microorganisms in porous media. Using a common nomenclature throughout and with contributions from top experts, this cohesive book illustrates the role of porous media in addressing some of the most challenging issues in biomedical engineering and biotechnology. The book contains sophisticated porous media models that can be used to improve the accuracy of modeling a variety of biological processes.

Principles of Heat Transfer in Porous Media

Author: M. Kaviany

Publisher: Springer Science & Business Media

ISBN: 1468404121

Category: Science

Page: 626

View: 8327

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Although the empirical treatment of fluid flow and heat transfer in porous media is over a century old, only in the last three decades has the transport in these heterogeneous systems been addressed in detail. So far, single-phase flows in porous media have been treated or at least formulated satisfactorily, while the subject of two-phase flow and the related heat-transfer in porous media is still in its infancy. This book identifies the principles of transport in porous media and compares the avalaible predictions based on theoretical treatments of various transport mechanisms with the existing experimental results. The theoretical treatment is based on the volume-averaging of the momentum and energy equations with the closure conditions necessary for obtaining solutions. While emphasizing a basic understanding of heat transfer in porous media, this book does not ignore the need for predictive tools; whenever a rigorous theoretical treatment of a phenomena is not avaliable, semi-empirical and empirical treatments are given.

Transport Phenomena in Multiphase Systems

Author: João M.P.Q. Delgado,Antonio Gilson Barbosa de Lima

Publisher: Springer

ISBN: 3319910620

Category: Science

Page: 304

View: 2208

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This book presents a collection of recent contributions in the field of transport phenomena in multiphase systems, namely, heat and mass transfer. It discusses various topics related to the transport phenomenon in engineering (including state-of-the-art, theory and applications) and introduces some of the most important theoretical advances, computational developments and technological applications in multiphase systems domain, providing a self-contained key reference that is appealing to scientists, researchers and engineers alike. At the same time, these topics are relevant to a variety of scientific and engineering disciplines, such as chemical, civil, agricultural, and mechanical engineering.

Intelligent Surfaces in Biotechnology

Scientific and Engineering Concepts, Enabling Technologies, and Translation to Bio-Oriented Applications

Author: H. Michelle Grandin,Marcus Textor

Publisher: John Wiley & Sons

ISBN: 1118181239

Category: Technology & Engineering

Page: 350

View: 3182

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A comprehensive overview of smart and responsive surfaces in biotechnology and their applications A wave of recent advances in cell biology, biophysics, chemistry, and materials science has enabled the development of a new generation of smart biomaterials. Intelligent Surfaces in Biotechnology: Scientific and Engineering Concepts, Enabling Technologies, and Translation to Bio-Oriented Applications provides readers with a comprehensive overview of surface modifications and their applications, including coverage of the physico-chemical properties, characterization methods, smart coating technologies, and demonstration of performance in vitro and in vivo. The first part of the book covers applications in the fields of biosensing and biodiagnostics, while the second part focuses more on coatings for medical devices, drug delivery, and tailored cell-surface interactions. The book explores intelligent surface applications such as tissue engineering, drug targeting and delivery, wound healing and anti-infection strategies, biosensors, nanopatterning, and bioinspired design of novel responsive materials and multifunctional surfaces. Designed to aid scientists and engineers in understanding the rapidly developing field of biofunctional surfaces, Intelligent Surfaces in Biotechnology is an edited volume with each chapter written by a respected expert and featuring examples taken from the most state-of-the-art developments in the discipline. Cover Image: Design concept for a diagnostic microfluidic system based on responsive polymer- and antibody-conjugated nanobeads (see Chapter 2 of this book, Figure 2.5; reproduced by permission from the Royal Society of Chemistry).

Gardening With Less Water

Low-Tech, Low-Cost Techniques: Use Up to 90% Less Water in Your Garden

Author: David A. Bainbridge

Publisher: Storey Publishing

ISBN: 1612125824

Category: Gardening

Page: 128

View: 6881

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Drawing on traditional practices from around the world, author David A. Bainbridge introduces simple low-tech solutions to today's complex water supply challenges. With detailed photography, he shows how to install buried clay pots and pipes, wicking systems, and other porous containers that deliver water directly to the plant's roots, whether the gardener is tending a bed, container garden, or tree.

Advances in Unsaturated Soils

Author: Bernardo Caicedo,Carol Murillo,Laureano Hoyos,Julio Esteban Colmenares,Ivan Rafael Berdugo

Publisher: CRC Press

ISBN: 0203771079

Category: Technology & Engineering

Page: 610

View: 8306

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New theories and testing techniques related with Unsaturated Soil Mechanics have proven to be valuable tools to study a broad spectrum of geo-materials which includes rocks, rock fills, frozen soils and domiciliary solid wastes. These new theories and testing techniques have permitted the analysis of several traditional problems from a new perspective (e.g., swelling or collapsible soils and compacted soils or pavements materials), and they have also shown their efficiency to study new energy-related problems like CO2 sequestration and nuclear waste disposal. Advances in Unsaturated Soils is a collection of papers from the 1st Pan-American Conference on Unsaturated Soils organized in Cartagena de Indias, Colombia, in February 2013. The volume includes 76 research papers coming for all over the world, as well as 7 keynotes papers by well known international researchers. The contributions present a variety of topics including: • Advances in testing techniques • Unsaturated soil behavior • Constitutive modeling and microstructure • Numerical modeling • Geotechnical problems Advances in Unsaturated Soils is expected to become a useful reference to academics and professionals involved in Unsaturated Soil Mechanics.

Modelling Water Flow in Unsaturated Porous Media

Accounting for Nonlinear Permeability and Material Heterogeneity

Author: Adam Szymkiewicz

Publisher: Springer Science & Business Media

ISBN: 3642235581

Category: Science

Page: 238

View: 9093

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The book focuses on two issues related to mathematical and numerical modelling of flow in unsaturated porous media. In the first part numerical solution of the governing equations is discussed, with particular emphasis on the spatial discretization of highly nonlinear permeability coefficient. The second part deals with large scale flow in heterogeneous porous media of binary structure. Upscaled models are developed and it is shown that the presence of material heterogeneities may give rise to additional non-equilibrium terms in the governing equations or to hysteresis in the averaged constitutive relationships.

Porous Media Fluid Transport and Pore Structure

Author: F Dullien

Publisher: Elsevier

ISBN: 0323151353

Category: Technology & Engineering

Page: 416

View: 4555

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Porous Media: Fluid Transport and Pore Structure presents relevant data on the role of pore structure in terms of transport phenomena in pore spaces. The information is then applied to the interpretation of various experiments and results of model calculations. This book emphasizes the discussion of ""flow through porous media"" in terms of interactions among the three main factors. These factors are transport phenomena, interfacial effects, and pore structure. An introductory chapter opens the text and presents some of the basic concepts and terms that will be encountered all throughout. Chapters 2 to 4 focus on the important foundations of the physical phenomena as applied in the pore space of porous media. These foundations are capillarity, pore structure, and single phase flow and diffusion. Chapters 5 to 7 discuss more in detail the different applications of pore structure to various operations and processes. Some of the concepts covered in this part of the book include flow and/or diffusion through a porous medium, simultaneous flow of immiscible fluids and immiscible displacement, and miscible displacement and hydrodynamic dispersion. This book is a good reference to students, scientists, and engineers in the field of chemistry, physics, and biology.

Water Transport in Brick, Stone and Concrete

Author: Christopher Hall,William D. Hoff

Publisher: CRC Press

ISBN: 0415564670

Category: Technology & Engineering

Page: 374

View: 1538

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This book provides a unified description of transport processes involving saturated and unsaturated flow in inorganic building materials and structures. It emphasizes fundamental physics and materials science, mathematical description, and experimental measurement as a basis for engineering design and construction practice. Water Transport in Brick, Stone and Concrete brings together in a unified manner current information and guidance on a complex subject. Durability of much of the built infrastructure depends on how water reacts with the construction material concerned, yet the underlying science of deterioration processes is not yet well understood. This book, by the two leading researchers in the field, will provide a central point of reference for the future. The second edition includes many references to new publications and gives new analyses of important topics in water transport, notably on the evaporation-driven moisture dynamics of built structures.

How to Optimize Fluid Bed Processing Technology

Part of the Expertise in Pharmaceutical Process Technology Series

Author: Dilip Parikh

Publisher: Academic Press

ISBN: 0128047283

Category: Medical

Page: 210

View: 691

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How to Optimize Fluid Bed Processing Technology: Part of the Expertise in Pharmaceutical Process Technology Series addresses the important components of fluid bed granulation, providing answers to problems that commonly arise and using numerous practical examples and case studies as reference. This book covers the theoretical concepts involved in fluidization, also providing a description of the choice and functionality of equipment. Additional chapters feature key aspects of the technology, including formulation requirements, process variables, process scale-up, troubleshooting, new development, safety, and process evaluation. Given its discussion of theoretical principles and practical solutions, this is a go-to resource for all those scientists and new researchers working with fluid bed granulation as a unit operation. Written by an expert in the field with several years of experience in product development, manufacturing, plant operations, and process engineering Illustrates when fluid bed granulation is needed, when to use less common fluid bed granulation methods, and the advantages of fluid bed granulation when compared to other granulation techniques Offers troubleshooting tips and practical advice for scientists working with this technique

Heat Pipe Science And Technology

Author: Amir Faghri

Publisher: Global Digital Press

ISBN: 1560323833

Category: Science

Page: 874

View: 6363

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Presents basic and advanced techniques in the analytical and numerical modeling of various heat pipe systems under a variety of operating conditions and limitations. It describes the variety of complex and coupled processes of heat and mass transfer in heat pipes. The book consists of fourteen chapters, two appendices, and over 400 illustrations, along with numerous references and a wide variety of technical data on heat pipes.