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Download or read book Fluid Flow and Infiltration in Structured Fibrous Porous Media written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Present the results of an extensive computational investigation of flow through structured fibrous media.
Author : Adrian Bejan
Publisher : Springer Science & Business Media
ISBN 13 : 9780387202259
Total Pages : 418 pages
Book Rating : 4.2/5 (22 download)
Download or read book Porous and Complex Flow Structures in Modern Technologies written by Adrian Bejan and published by Springer Science & Business Media. This book was released on 2004-04-29 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porous and Complex Flow Structures in Modern Technologies represents a new approach to the field, considering the fundamentals of porous media in terms of the key roles played by these materials in modern technology. Intended as a text for advanced undergraduates and as a reference for practicing engineers, the book uses the physics of flows in porous materials to tie together a wide variety of important issues from such fields as biomedical engineering, energy conversion, civil engineering, electronics, chemical engineering, and environmental engineering. Thus, for example, flows of water and oil through porous ground play a central role in energy exploration and recovery (oil wells, geothermal fluids), energy conversion (effluents from refineries and power plants), and environmental engineering (leachates from waste repositories). Similarly, the demands of miniaturization in electronics and in biomedical applications are driving research into the flow of heat and fluids through small-scale porous media (heat exchangers, filters, gas exchangers). Filters, catalytic converters, the drying of stored grains, and a myriad of other applications involve flows through porous media. By providing a unified theoretical framework that includes not only the traditional homogeneous and isotropic media but also models in which the assumptions of representative elemental volumes or global thermal equilibrium fail, the book provides practicing engineers the tools they need to analyze complex situations that arise in practice. This volume includes examples, solved problems and an extensive glossary of symbols.
Author : Bojan Markicevic
Publisher :
ISBN 13 :
Total Pages : 306 pages
Book Rating : 4.:/5 (493 download)
Download or read book On the Transverse Permeability of Structured Fibrous Porous Media written by Bojan Markicevic and published by . This book was released on 2001 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Renaud Toussaint
Publisher : Frontiers Media SA
ISBN 13 : 2889450775
Total Pages : 202 pages
Book Rating : 4.8/5 (894 download)
Download or read book Flow and Transformations in Porous Media written by Renaud Toussaint and published by Frontiers Media SA. This book was released on 2017-02-07 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid flow in transforming porous rocks, fracture networks, and granular media is a very active interdisciplinary research subject in Physics, Earth Sciences, and Engineering. Examples of natural and engineered processes include hydrocarbon recovery, carbon dioxide geo-sequestration, soil drying and wetting, pollution remediation, soil liquefaction, landslides, dynamics of wet or dry granular media, dynamics of faulting or friction, volcanic eruptions, gas venting in sediments, karst development and speleogenesis, ore deposit development, and radioactive waste disposal. Hydrodynamic flow instabilities and pore scale disorder typically result in complex flow patterning. In transforming media, additional mechanisms come into play: compaction, de-compaction, erosion, segregation, and fracturing lead to changes in permeability over time. Dissolution, precipitation, and chemical reactions between solutes and solids may gradually alter the composition and structure of the solid matrix, either creating or destroying permeable paths for fluid flow. A complex, dynamic feedback thus arises where, on the one hand, the fluid flow affects the characteristics of the porous medium, and on the other hand the changing medium influences the fluid flow. This Research Topic Ebook presents current research illustrating the depth and breadth of ongoing work in the field of flow and transformation in porous media through 15 papers by 72 authors from around the world. The body of work highlights the challenges posed by the vast range of length- and time-scales over which subsurface flow processes occur. Importantly, phenomena from each scale contribute to the larger-scale behavior. The flow of oil and gas in reservoirs, and the flow of groundwater on catchment scale is sensitively linked to pore scale processes and material heterogeneity down to the micrometer scale. The geological features of the same reservoirs and catchments evolved over millions of years, sometimes as a consequence of cracking and fracture growth occurring on the time scale of microseconds. The research presented by the authors of this Research Topic represents a step toward bridging the separation of scales as well as the separation of scientific disciplines so that a more unified picture of flow and transformation in porous media can start to emerge.
Download or read book An Investigation on Fluid Flow in Fibrous Materials via Image-Based Fluid Dynamics Simulations written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: While there are a large number of analytical studies dedicated to developing permeability equations for a 2-D and 3-D models of fibrous disordered structures, there are only few numerical work that compares these models with real counterparts. For the first time, we present a series of numerical simulations performed on real fibrous media obtained via Digital Volumetric Imaging technique. An efficient procedure is presented for reconstructing 3-D images from the 2-D images of real fibrous media and processing them (meshing them) for performing fluid flow simulations. Permeability values obtained from these simulations are compared with those obtained from analytical equations given in the literature. We also present two scale modeling technique to predict macro scale permeability of fibrous structures. Second part of this thesis deals with unsaturated flow through the fibrous media. We start our study by computing the pore size distribution of typical hydroentangled nonwoven materials and present a theoretical model for their geometric pore size distributions based on Poisson line network model of the fibrous media. We also study connectivity of the pore space in fibrous media by computing and comparing the accessible and allowed pore volumes in the form of access function graphs. We also present a novel image-based technique to study the changes in the pore size distribution of a fibrous material exposed to compressive load. A combined micro- and macroscale modeling is presented to simulate the fluid infiltration in fibrous media. The RichardsÃØâ'Ơâ"Ø equation of two-phase flow in porous media is used here to model the fluid absorption in un-saturated fibrous thin sheets. The required consecutive equations, relative permeability and capillary pressure as functions of mediumÃØâ'Ơâ"Øs saturation, are obtained via microscale modeling and long column experiment, respectively. The RichardsÃØâ'Ơâ"Ø equation together with the above consecutive correlations is simultaneous.
Author : Ali Tamayol
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.:/5 (93 download)
Download or read book Micro/macroscopic Fluid Flow in Open Cell Fibrous Structures and Porous Media written by Ali Tamayol and published by . This book was released on 2011 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibrous porous materials are involved in a wide range of applications including composite fabrication, filtration, compact heat exchangers, fuel cell technology, and tissue engineering to name a few. Fibrous structures, such as metalfoams, have unique characteristics such as low weight, high porosity, high mechanical strength, and high surface to volume ratio. More importantly, in many applications the fibrous microstructures can be tailored to meet a range of requirements. Therefore, fibrous materials have the potential to be used in emerging sustainable energy conversion applications. The first step for analyzing transport phenomena in porous materials is to determine the micro/macroscopic flow-field inside the medium. In applications where the porous media is confined in a channel, the system performance is tightly related to the flow properties of the porous medium and its interaction with the channel walls, i.e., macroscopic velocity distribution. Therefore, the focus of the study has been on: developing new mechanistic model(s) for determining permeability and inertial coefficient of fibrous porous materials; investigating the effects of microstructural and mechanical parameters such as porosity, fiber orientation, mechanical compression, and fiber distribution on the flow properties and pressure drop of fibrous structures; determining the macroscopic flow-field in confined porous media where the porous structure fills the channel cross-section totally or partially. A systematic approach has been followed to study different aspects of the flow through fibrous materials. The complex microstructure of real materials has been modelled using unit cells that have been assumed to be repeated throughout the media. Implementing various exact and approximate analytical techniques such as integral technique, point matching, blending rules, and scale analysis the flow properties of such media have been modelled; the targeted properties include permeability and inertial coefficient. In addition, fluid flow through microchannels, fully and partially filled with porous media, has been modelled using a volume-averaged equation, which is a novel approach in Microfluidics. To verify the developed models, several testbeds have been designed and experimental studies have been conducted with various fluids and porous materials. The proposed models have been verified with the measured data and the experimental results reported by others.
Author : Reza Masoodi
Publisher : CRC Press
ISBN 13 : 1439874336
Total Pages : 369 pages
Book Rating : 4.4/5 (398 download)
Download or read book Wicking in Porous Materials written by Reza Masoodi and published by CRC Press. This book was released on 2012-10-26 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference offers information on the science and advances of wicking in porous materials. It describes various modeling approaches, traditional and modern, but maintains an emphasis on the modern methodologies. A host of internationally recognized scientists and researchers contribute chapters that describe the physics of wicking and the different approaches available for modeling wicking. Chapters cover measurement of wetting parameters such as surface tension and contact angle; the Washburn Equation; measurement of various quantities; wicking in rigid porous materials; wicking in swelling porous materials; and two-phase flow approaches to modeling wick flow.
Author : Sabine Muntz
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (318 download)
Download or read book Fluid Structure Interaction for Fluid Flow Normal to Deformable Porous Media written by Sabine Muntz and published by . This book was released on 2008 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. R. Bunsell
Publisher : Woodhead Publishing
ISBN 13 : 9781855731424
Total Pages : 742 pages
Book Rating : 4.7/5 (314 download)
Download or read book ECCM-6 written by A. R. Bunsell and published by Woodhead Publishing. This book was released on 1993 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher John Guzy
Publisher :
ISBN 13 :
Total Pages : 518 pages
Book Rating : 4.:/5 (13 download)
Download or read book Flow and Retention in Fibrous Porous Media written by Christopher John Guzy and published by . This book was released on 1983 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xianke Lu
Publisher : Springer Nature
ISBN 13 : 3030536025
Total Pages : 172 pages
Book Rating : 4.0/5 (35 download)
Download or read book Fluid Flow and Heat Transfer in Porous Media Manufactured by a Space Holder Method written by Xianke Lu and published by Springer Nature. This book was released on 2020-08-27 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the effects of the material, porosity, pore size and pore shape on flow behaviour and heat transfer in microscale porous media manufactured using a space holder method. It also describes a novel approach to studying flow behaviour in non-transparent materials such as porous metals via flow visualization in transparent media that mimic the porous structure. The book employs a combination of microparticle image velocimetry – a modern, advanced technique – and pressure drop measurement – a more traditional method – that makes the mechanistic study of several phenomena possible. It covers the identification of various flow regimes and their boundaries, velocity profiles on the microscale, the heat transfer coefficient under forced convection, and the correlation between flow behaviour on the pore scale and the convective heat transfer performance of the porous media. Understanding the fundamentals of porous flow, especially on the microscale, is critical for applications of porous media in heat exchangers, catalytic convertors, chemical reactors, filtration and oil extraction. Accordingly, this book offers a valuable resource for all researchers, graduate students and engineers working in the areas of porous flow and porous materials.
Author : Philippe Boisse
Publisher : Woodhead Publishing
ISBN 13 : 0128190116
Total Pages : 730 pages
Book Rating : 4.1/5 (281 download)
Download or read book Composite Reinforcements for Optimum Performance written by Philippe Boisse and published by Woodhead Publishing. This book was released on 2020-10-22 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite Reinforcements for Optimum Performance, Second Edition, has been brought fully up to date with the latest developments in the field. It reviews the materials, properties and modelling techniques used in composite production and highlights their uses in optimizing performance. Part I covers materials for reinforcements in composites, including chapters on fibers, carbon nanotubes and ceramics as reinforcement materials. In Part II, different types of structures for reinforcements are discussed, with chapters covering woven and braided reinforcements, three-dimensional fibre structures and two methods of modelling the geometry of textile reinforcements: WiseTex and TexGen. Part III focuses on the properties of composite reinforcements, with chapters on topics such as in-plane shear properties, transverse compression, bending and permeability properties. Finally, Part IV covers the characterization and modelling of reinforcements in composites, with chapters focusing on microscopic and mesoscopic approaches, X-ray tomography analysis and modelling reinforcement forming processes. With its distinguished editor and international team of contributors, Composite Reinforcements for Optimum Performance, Second Edition, is an essential reference for designers and engineers working in the composite and composite reinforcement manufacturing industry, as well as all those with an academic research interest in the subject. Discusses the characterization and modeling of reinforcements in composites, focusing on such topics as microscopic and mesoscopic approaches, X-ray tomography analysis, and modeling reinforcement forming processes Provides comprehensive coverage of the types and properties of reinforcement in composites, along with their production and performance optimization Includes sections on NCF (non-crimp fabrics), natural fiber reinforcements, tufting composite reinforcements, sustainability, multiscale modeling, knitted reinforcements, and more
Author : Philip Brown
Publisher : Woodhead Publishing
ISBN 13 : 0081005822
Total Pages : 318 pages
Book Rating : 4.0/5 (81 download)
Download or read book Fibrous Filter Media written by Philip Brown and published by Woodhead Publishing. This book was released on 2017-06-16 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibrous Filter Media comprehensively covers the types, manufacture, applications, performance, and modeling of fibrous filter media. Part I introduces the principles of gas and liquid filtration, while Part II presents an overview of the types of fibrous filters, including details of fiber types, fabric construction, and applications. Part III covers a variety of filtration applications in which fibrous assemblies are used, with examples ranging from filtration for improving air quality, to medical filters, to industrial waste-water filtration. Finally, Part III covers the properties and performance of fibrous filters, including chapters on filter performance and simulation. With its expert editors and international team of contributors, this important book provides information on fibrous filters relevant to fiber and textile scientists, and is also ideal for academics and industry professionals working in the field of filtration. Dr. Philip Brown is Sweetenburg Professor of polymer and textile engineering at Clemson University, USA. Dr. Christopher Cox is Professor of mathematical sciences at Clemson University, USA. Systematic and comprehensive coverage of the trends and new technologies being developed in the field of fibrous filter media Focused on the needs of the textiles and filtration industries, with a clear emphasis on applied technology Contains contributions from an international team of authors edited by an expert in the field
Download or read book Modeling Tortuosity in Fibrous Porous Media using Computational Fluid Dynamics written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Tortuosity factor is often used to characterize the structure of the pore volume in fibrous porous media. This work involves the determination of tortuosity using computational fluid dynamic (CFD) simulation and particle tracking analysis. A new method has been adopted to generate 3-D geometry for modeling fibrous porous structures using ANSYSÃ'® Parametric Design Language (APDL). Computation fluid dynamics has been used to simulate permeability of modeled 3-D fiberweb structures. The simulated permeability results are in good agreement with the models proposed by other authors. The experimental results were found to be slightly higher compared to simulated results and existing models due to the layered configuration of the samples. Permeability is found to be significantly influenced by fiber diameter, and porosity as well as fiberweb thickness. The relationship between air permeability and fiberweb thickness has been used to develop an indirect method for determination of tortuosity factor. Tortuosity factor has also been determined using a more direct method involving CFD simulation and Particle Tracking analysis. Different models established using the direct and indirect methods of determination show that tortuosity is significantly influenced by porosity, fiber diameter and fiberweb thickness, whereas the models available in the literature express tortuosity as a function of porosity only.
Author : Jiping Bai
Publisher : Woodhead Publishing
ISBN 13 : 0128203471
Total Pages : 844 pages
Book Rating : 4.1/5 (282 download)
Download or read book Advanced Fibre-Reinforced Polymer (FRP) Composites for Structural Applications written by Jiping Bai and published by Woodhead Publishing. This book was released on 2022-12-05 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Fibre-reinforced Polymer (FRP) Composites for Structural Applications, Second Edition provides updates on new research that has been carried out on the use of FRP composites for structural applications. These include the further development of advanced FRP composites materials that achieve lighter and stronger FRP composites, how to enhance FRP integrated behavior through matrix modification, along with information on pretension treatments and intelligence technology. The development of new technology such as automated manufacturing and processing of fiber-reinforced polymer (FRP) composites have played a significant role in optimizing fabrication processing and matrix formation. In this new edition, all chapters have been brought fully up-to-date to take on the key aspects mentioned above. The book's chapters cover all areas relevant to advanced FRP composites, from the material itself, its manufacturing, properties, testing and applications in structural and civil engineering. Applications span from civil engineering, to buildings and the energy industry. Covers all areas relevant to advanced FRP composites, from the material itself, its manufacturing, properties, testing and applications in structural engineering Features new manufacturing techniques, such as automated fiber placement and 3D printing of composites Includes various applications, such as prestressed-FRP, FRP made of short fibers, continuous structural health monitoring using advanced optical fiber Bragg grating (FBG), durability of FRP-strengthened structures, and the application of carbon nano-tubes or platelets for enhancing durability of FRP-bonded structures
Author : D.S. Wilkinson
Publisher : Elsevier
ISBN 13 : 1483286789
Total Pages : 329 pages
Book Rating : 4.4/5 (832 download)
Download or read book Proceedings of the International Symposium On: Advanced Structural Materials written by D.S. Wilkinson and published by Elsevier. This book was released on 2013-10-22 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This International Symposium is sponsored by the Materials Engineering Section and the Basic Sciences Section of the Metallurgical Society of CIM and co-sponsored by the Canadian Ceramic Society. Topics covered include metal matrix composites, structural ceramics, polymeric composite materials, powder metallurgical materials and interfaces.
Author : S. Bickerton
Publisher : Elsevier Inc. Chapters
ISBN 13 : 0128088370
Total Pages : 39 pages
Book Rating : 4.1/5 (28 download)
Download or read book Advanced fibre-reinforced polymer (FRP) composites for structural applications written by S. Bickerton and published by Elsevier Inc. Chapters. This book was released on 2013-09-30 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term liquid composite moulding (LCM) encompasses a family of processes in which a dry fibrous reinforcement is impregnated by a liquid resin inside a sealed cavity. As the understanding and control of these processes improve, their field of application widens. LCM processes can be used as a replacement to decrease the environmental impact and improve the quality of composite parts made via traditional open-mould processes. they can also provide a cost-cutting alternative to prepreg techniques while maintaining a high part quality. This chapter describes the variety of processes blanketed under the class liquid composite moulding and the research advances in the monitoring and simulation of these processes. the subsequent section presents the current usage of LCM techniques in the field of civil engineering, including some case studies, before outlining some future trends and offering sources for further information.
