Porous and Complex Flow Structures in Modern Technologies / Edition 1

Porous and Complex Flow Structures in Modern Technologies / Edition 1

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Springer New York
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Porous and Complex Flow Structures in Modern Technologies / Edition 1

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.

Product Details

ISBN-13: 9781441919007
Publisher: Springer New York
Publication date: 12/12/2011
Edition description: 2004
Pages: 396
Product dimensions: 6.10(w) x 9.25(h) x 0.03(d)

Table of Contents

1 Porous Media Fundamentals
1.1 Structure
1.1.1 Microporous Media
1.1.2 Mesoporous Media
1.1.3 Macroporous Media
1.2 Mass Conservation
1.3 Darcy Flow and More Advanced Models
1.4 Energy Conservation
1.5 Heat and Mass Transfer
1.5.1 Fluid Flow
1.5.2 Heat Flow 2 Flows in Porous Media
2.1 Use Simple Methods First
2.2 Scale Analysis of Forced Convection Boundary Layers
2.3 Sphere and Cylinder with Forced Convection
2.4 Channels with Porous Media and Forced Convection
2.5 Scale Analysis of Natural Convection Boundary Layers
2.6 Thermal Stratification and Vertical Partitions
2.7 Horizontal Walls with Natural Convection
2.8 Sphere and Horizontal Cylinder with Natural Convection
2.9 Enclosures Heated from the Side
2.10 Enclosures Heated from Below
2.11 The Method of Intersecting the Asymptotes
2.11.1 The Many Counterflows Regime
2.11.2 The Few Plumes Regime
2.11.3 The Intersection of Asymptotes 3 Energy Engineering
3.1 Thermodynamics Fundamentals: Entropy Generation or Exergy Destruction
3.2 Exergy Analysis
3.3 Thermal Energy Storage
3.4 Sensible Heat Storage
3.5 Aquifer Thermal Energy Storage
3.6 Latent Heat Storage
3.7 Cold Thermal Energy Storage
3.8 Porous Medium Model of a Storage System with Phase-Change Material
3.9 Fuel Cell Principles and Operation
3.10 Fuel Cell Structure and Performance
3.11 The Concept of Exergy-Cost-Energy-Mass (EXCEM) Analysis
3.12 Exergy, Environment, and Sustainable Development 4 Environmental and Civil Engineering
4.1 The Energy–Environment Interface
4.2 Wakes: Concentrated Heat Sources in Forced Convection
4.3 Plumes: Concentrated Heat Sources in Natural Convection
4.4 Penetrative Convection
4.5 Aerosol Transport and Collection in Filters
4.6 Filter Efficiency and Filtration Theories
4.7 Pressure Drop, Permeability,and Filter Performance
4.8 Ionic Transport
4.9 Reactive Porous Media
4.10 Electrodiffusion
4.11 Tree-Shaped Flow Networks
4.12 Optimal Size of Flow Element
4.13 Hot Water Distribution Networks
4.14 Minimal Resistance Versus Minimal Flow Length 5 Compact Heat Transfer Flow Structures
5.1 Heat Exchangers as Porous Media
5.2 Optimal Spacings in Natural Convection
5.3 Optimal Spacings in Forced Convection
5.4 Pulsating Flow
5.5 Optimal Packing of Fibrous Insulation
5.6 Optimal Maldistribution: Tree-Shaped Flows
5.7 Dendritic Heat Exchangers
5.7.1 Elemental Volume
5.7.2 First Construct
5.7.3 Second Construct
5.8 Constructal Multiscale Structure for Maximal Heat Transfer Density
5.8.1 Heat Transfer
5.8.2 Fluid Friction
5.8.3 Heat Transfer Rate Density: The Smallest Scale
5.9 Concluding Remarks 6 Living Structures
6.1 Respiratory System
6.1.1 Airflow Within the Bronchial Tree
6.1.2 Alveolar Gas Diffusion
6.1.3 Particle Deposition
6.2 Blood and the Circulatory System
6.3 Biomembranes: Structure and Transport Mechanisms
6.3.1 Cell Membrane
6.3.2 Capillary Wall
6.4 Transport of Neutral Solutes Across Membranes
6.5 Transport of Charged Solutes Across Membranes
6.5.1 Membrane Potential
6.5.2 Electrical Equivalent Circuit
6.6 The Kidney and the Regulation of Blood Composition
6.6.1 Kidney Failure and Dialysis
6.6.2 Pumping Blood Through Semipermeable Membranes 7 Drying of Porous Materials
7.1 Introduction
7.2 Drying Equipment
7.3 Drying Periods
7.4 Basic Heat and Moisture Transfer Analysis
7.5 Wet Material
7.6 Types of Moisture Diffusion
7.7 Shrinkage
7.8 Modeling of Packed-Bed Drying
7.9 Diffusion in Porous Media with Low Moisture Content
7.10 Modeling of Heterogeneous Diffusion in Wet Solids
7.10.1 Mass Transfer
7.10.2 Heat Transfer
7.10.3 Boundary Cond

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