Dielectric Properties of Porous Media

Dielectric Properties of Porous Media

Author: S.O. Gladkov

Publisher: Springer Science & Business Media

ISBN: 9783662067055

Category: Technology & Engineering

Page: 266

View: 952

This monograph systematically presents the fundamentals of theoretical and experimental research into the most important physical characteristics of porous structures. Non-standard behavior of certain physical parameters, such as the breakdown of the electric field of porous substances, is described. The method of calculation of the thermal conductivity coefficient of porous dielectrics, based on the non-equilibrium principle, is illustrated in detail. This approach is then applied to the investigation of the properties of "disparate" substances such as cellulose matrices, composites, and fibrous structures. The book is intended for physicists, physical chemists and materials scientists at research and postgraduate levels; it may also be helpful to engineers and technical workers in the applied sciences.

Nanofluid Flow in Porous Media

Nanofluid Flow in Porous Media

Author: Mohsen Sheikholeslami Kandelousi

Publisher: BoD – Books on Demand

ISBN: 9781789238372

Category: Science

Page: 244

View: 670

Studies of fluid flow and heat transfer in a porous medium have been the subject of continuous interest for the past several decades because of the wide range of applications, such as geothermal systems, drying technologies, production of thermal isolators, control of pollutant spread in groundwater, insulation of buildings, solar power collectors, design of nuclear reactors, and compact heat exchangers, etc. There are several models for simulating porous media such as the Darcy model, Non-Darcy model, and non-equilibrium model. In porous media applications, such as the environmental impact of buried nuclear heat-generating waste, chemical reactors, thermal energy transport/storage systems, the cooling of electronic devices, etc., a temperature discrepancy between the solid matrix and the saturating fluid has been observed and recognized.

Low Dielectric Constant Materials for IC Applications

Low Dielectric Constant Materials for IC Applications

Author: Paul S. Ho

Publisher: Springer Science & Business Media

ISBN: 9783642559082

Category: Technology & Engineering

Page: 310

View: 233

Low dielectric constant materials are an important component of microelectronic devices. This comprehensive book covers the latest low-dielectric-constant (low-k) materials technology, thin film materials characterization, integration and reliability for back-end interconnects and packaging applications in microelectronics. Highly informative contributions from leading academic and industrial laboratories provide comprehensive information about materials technologies for

Advances in Heat Transfer

Advances in Heat Transfer

Author:

Publisher: Academic Press

ISBN: 0080575870

Category: Science

Page: 524

View: 490

Advances in Heat Transfer is designed to fill the information gap between regularly scheduled journals and university level textbooks by providing in-depth review articles over a broader scope than is allowable in either journals or texts.

Porous Media

Porous Media

Author: F. A.L. Dullien

Publisher: Academic Press

ISBN: 9780323139335

Category: Technology & Engineering

Page: 574

View: 546

This book examines the relationship between transport properties and pore structure of porous material. Models of pore structure are presented with a discussion of how such models can be used to predict the transport properties of porous media. Portions of the book are devoted to interpretations of experimental results in this area and directions for future research. Practical applications are given where applicable, and are expected to be useful for a large number of different fields, including reservoir engineering, geology, hydrogeology, soil science, chemical process engineering, biomedical engineering, fuel technology, hydrometallurgy, nuclear reactor technology, and materials science. Presents mechanisms of immiscible and miscible displacement (hydrodynamic dispersion) process in porous media Examines relationships between pore structure and fluid transport Considers approaches to enhanced oil recovery Explores network modeling and perolation theory

Porous Media Fluid Transport and Pore Structure

Porous Media Fluid Transport and Pore Structure

Author: F Dullien

Publisher: Elsevier

ISBN: 9780323151351

Category: Technology & Engineering

Page: 416

View: 726

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.

Microwave Materials and Applications

Microwave Materials and Applications

Author: Mailadil T. Sebastian

Publisher: John Wiley & Sons

ISBN: 9781119208556

Category: Technology & Engineering

Page: 1000

View: 264

The recent rapid progress in wireless telecommunication, including the Internet of Things, 5th generation wireless systems, satellite broadcasting, and intelligent transport systems has increased the need for low-loss dielectric materials and modern fabrication techniques. These materials have excellent electrical, dielectric, and thermal properties and have enormous potential, especially in wireless communication, flexible electronics, and printed electronics. Microwave Materials and Applications discusses the methods commonly employed for measuring microwave dielectric properties, the various attempts reported to solve problems of materials chemistry and crystal structure, doping, substitution, and composite formation, highlighting the processing techniques, morphology influences, and applications of microwave materials whilst summarizing many of the recent technical research accomplishments in the area of microwave dielectrics and applications Chapters examine: Oxide ceramics for dielectric resonators and substrates HTCC, LTCC and ULTCC tapes for substrates Polymer ceramic composites for printed circuit boards Elastomer-ceramic composites for flexible electronics Dielectric inks EMI shielding materials Microwave ferrites A comprehensive Appendix presents the fundamental properties for more than 4000 low-loss dielectric ceramics, their composition, crystal structure, and their microwave dielectric properties. Microwave Materials and Applications presents a comprehensive view of all aspects of microwave materials and applications, making it useful for scientists, industrialists, engineers, and students working on current and emerging applications of wireless communications and consumer electronics.

Fundamentals of Refractory Technology

Fundamentals of Refractory Technology

Author: James P. Bennett

Publisher: John Wiley & Sons

ISBN: 9781118370902

Category: Technology & Engineering

Page: 314

View: 957

This updated reprint provides up-to-date information on refractories technology presented by recognized experts in the field. Produced from focused sessions of two Refractory Ceramics Division meetings, refractory scientists from around the world were invited to provide overviews of the scientific principles related to refractory manufacturing and performance. The result is this informative volume and a current view of the Fundamentals of Refractory Technology. Proceedings of the Lecture Series presented at the 101st and 102nd Annual Meetings held April 25-28, 1999, in Indiana and April 30-May 3, 2000, in Missouri; Ceramics Transactions, Volume 125.

Ground Penetrating Radar Theory and Applications

Ground Penetrating Radar Theory and Applications

Author: Harry M. Jol

Publisher: Elsevier

ISBN: 0080951848

Category: Science

Page: 544

View: 520

Ground-penetrating radar (GPR) is a rapidly developing field that has seen tremendous progress over the past 15 years. The development of GPR spans aspects of geophysical science, technology, and a wide range of scientific and engineering applications. It is the breadth of applications that has made GPR such a valuable tool in the geophysical consulting and geotechnical engineering industries, has lead to its rapid development, and inspired new areas of research in academia. The topic of GPR has gone from not even being mentioned in geophysical texts ten years ago to being the focus of hundreds of research papers and special issues of journals dedicated to the topic. The explosion of primary literature devoted to GPR technology, theory and applications, has lead to a strong demand for an up-to-date synthesis and overview of this rapidly developing field. Because there are specifics in the utilization of GPR for different applications, a review of the current state of development of the applications along with the fundamental theory is required. This book will provide sufficient detail to allow both practitioners and newcomers to the area of GPR to use it as a handbook and primary research reference. *Review of GPR theory and applications by leaders in the field *Up-to-date information and references *Effective handbook and primary research reference for both experienced practitioners and newcomers

Percolation Theory for Flow in Porous Media

Percolation Theory for Flow in Porous Media

Author: Allen Hunt

Publisher: Springer

ISBN: 9783319037714

Category: Science

Page: 447

View: 446

This monograph presents, for the first time, a unified and comprehensive introduction to some of the basic transport properties of porous media, such as electrical and hydraulic conductivity, air permeability and diffusion. The approach is based on critical path analysis and the scaling of transport properties, which are individually described as functions of saturation. At the same time, the book supplies a tutorial on percolation theory for hydrologists, providing them with the tools for solving actual problems. In turn, a separate chapter serves to introduce physicists to some of the language and complications of groundwater hydrology necessary for successful modeling. The end-of-chapter problems often indicate open questions, which young researchers entering the field can readily start working on. This significantly revised and expanded third edition includes in particular two new chapters: one on advanced fractal-based models, and one devoted to the discussion of various open issues such as the role of diffusion vs. advection, preferential flow vs. critical path, universal vs. non-universal exponents for conduction, and last but not least, the overall influence of the experimental apparatus in data collection and theory validation. "The book is suitable for advanced graduate courses, with selected problems and questions appearing at the end of each chapter. [...] I think the book is an important work that will guide soil scientists, hydrologists, and physicists to gain a better qualitative and quantitative understanding of multitransport properties of soils." (Marcel G. Schaap, Soil Science Society of America Journal, May-June, 2006)