Transport Phenomena in Capillary-Porous Structures and Heat Pipes / Edition 1

by Henry Smirnov

Overview

Two-phase nano- and micro-thermal control device research is now proving relevant to a growing range of modern applications, including those in cryogenics, thermal engineering, MEMS, and aerospace engineering. Until now, researchers have lacked a definitive resource that provides a complete review of micro- and nano-scale evaporative heat and mass transfer in capillaries-porous structures.

Transport Phenomena in Capillary-Porous Structures and Heat Pipes covers the latest experiemental research efforts in two-phase thermal control technology research and development. The book covers vaporization heat transfer and hydrodynamic processes occurring in capillary channels and porous structures—paying particular attention to the physical mechanisms of these phenomena. Extensive experimental research activities on unique film and photo materials of boiling inside slits, capillaries, and capillary-porous structures are reviewed.

By providing a complete record of research in the field, this volume gives researchers, engineers, and practitioners working on vaporization heat transfer and hydrodynamic processes the findings needed to avoid unnecessary experimental efforts, and will help further the development of this dynamic area of research.

Product Details

ISBN-13:	9780367385354
Publisher:	Taylor & Francis
Publication date:	09/19/2019
Pages:	400
Product dimensions:	6.12(w) x 9.19(h) x (d)

Table of Contents

Foreword xi

Preface xiii

Introduction xv

Nomenclature xix

Chapter 1 Hydrodynamics and Heat Transfer at Single-Phase Flow in Capillary and Slit Channels 1

1.1 Hydrodynamics and Heat Transfer of Steady Single-Phase Flow in Capillaries and Slits 1

1.2 Hydrodynamics and Heat Transfer of Nonsteady Single-Phase Laminar Flow 9

1.3 Hydrodynamics and Heat Transfer of Single-Phase Turbulent Flow in Capillaries and Slits 12

Chapter 2 Hydrodynamics and Heat Transfer at Single-Phase Flow through Porous Media 17

2.1 Physical Fundamentals, Models, and Equations of Momentum and Heat Transfer at Single-Flow through Porous Media 17

2.2 Effective Thermal Conductivity of Porous Structures 20

2.3 Internal Heat Transfer in Porous Media 28

2.4 Heat Transfer on the Porous Structure External Surface 33

Chapter 3 Thermohydrodynamics at Vaporization inside Capillary-Porous Structures 41

3.1 Vaporization Conditions in Capillaries and Capillary-Porous Structures 41

3.2 Hydrodynamics at Vaporization in Capillary-Porous Structures 45

3.3 Fundamental Principle of "Irreversibility Minimum" in Two-Phase Filtration Modeling 55

3.4 Investigations of Vaporization in Porous Structures with Internal Heat Generation 63

3.5 Experimental Investigations of Internal Characteristics and Mechanisms of Thermohydrodynamic Phenomena 71

Chapter 4 Thermohydrodynamics at Vaporization in Slit and Capillary Channels 93

4.1 Experimental Studies on Heat Transfer at Boiling in Slits and Capillary Channels 93

4.2 Hydrodynamic Phenomena and Vaporization in Slit and Capillary Channels 115

4.3 Experimental Studies of Vaporization Mechanism in Plain Slits and Annular Channels 121

4.4 Physical Imaginations and Theoretical Models for Heat Transfer at Vaporization in Vertical Slits and Capillaries 147

4.5 Physical Imaginations and Theoretical Models for Heat Transfer at Vaporization in Horizontal and Short Slits and Capillaries 153

Chapter 5 Heat and Mass Transfer at Vaporization on Surfaces with Capillary-Porous Coverings 163

5.1 Experimental Investigations of Vaporization Heat Transfer on Surfaces with Porous Coatings 163

5.1.1 Experimental Investigations of Boiling Heat Transfer on Coated Surfaces in Subcritical Thermal Regimes 163

5.1.2 Experimental Investigations of Boiling Heat Transfer on Surfaces Covered by Screen Wicks 168

5.1.3 Experimental Investigations of Vaporization Heat Transfer on Fiber-Metal Surfaces 182

5.1.4 Experimental Investigations of Vaporization Heat Transfer on Surfaces Covered by Corrugated Structures 189

5.1.5 Experimental Investigations of Heat Transfer inside Evaporators of Loop Heat Pipes 194

5.1.6 Experimental Investigations of Boiling Heat Transfer on Surfaces Covered by Sintered and Gas-Sprayed Coatings 201

5.2 Experiments on Heat Transfer at Vaporization on Surfaces with Sintered Coatings: The Malyshenko Phenomenological Theory of Boiling 214

5.3 Physical Imaginations and Models of Vaporization on Surfaces with Porous Coatings 226

5.4 General Model of Vaporization Processes on the Coated Surfaces (the Third Stage) 260

5.5 Heat Transfer at Vaporization on Surfaces Covered by Movable Capillary Structures 271

5.6 Models of Heat Transfer inside Evaporators of LHP and Capillary Pumped Loops 291

Chapter 6 Heat Transfer Crises at Vaporization Inside Slits, Capillaries, and on Surfaces Covered by Capillary-Porous Structures 299

6.1 Physical Explanations and Semiempirical Models of Boiling Heat Transfer Crisis 299

6.2 Modified Hydrodynamic Theory of Boiling Crises in Restricted Spaces 303

6.3 Experiments on Boiling Heat Transfer Crisis at Forced Liquid Flow in Slits and Capillary Tubes 305

6.3.1 Boiling Crisis at Forced Flow in Capillaries 306

6.3.2 Boiling Heat Transfer Crisis at Low-Velocity Flow inside Annular Capillary Channels 318

6.3.3 Experimental Investigation of the CHF at Forced Flow in Capillaries: Modified Hydrodynamic Theory of Boiling Heat Transfer Crisis 319

6.3.4 CHF in Narrow Annular Channels (Experimental Data and Semiempirical Models) 326

6.4 Experimental Research on the CHF at Pool Boiling in Slits, Capillaries, and Corrugated Capillary Channels 330

6.5 Experimental Research on Heat Transfer Crisis at Boiling on Surfaces with Porous Coverings 338

6.6 Maximum Heat Fluxes Inside Heat Pipes 347

References 355

Index 371