# Radiation Heat Transfer in Disperse Systems

## Description

A number of technical processes and natural phenomena involve heat transfer by thermal radiation. The physical basis of all solutions considered in this book isthe notion considered in this book is the notion of radiation transfer in an absorbing and scattering medium as a macroscopic process which can be described by a phenomenological transfer theory and kinetic equations for spectral radiation intensity. In addition to covering approximate methods for the solution of the radiation transfer equation, the book discusses radiative properties of some disperse systems, and radiative and combined heat transfer problems. The appendix includes computer codes for studying the methods discussed in the book.
"This reviewer found Radiation Heat Transfer in Disperse Systems to be very interesting and useful. The extensive comparisons between approximate and exact solutions, combined with the physical explanations for the differences, provide important insights into the complexities and subtleties of this subject. It serves as an excellent reference volume for this specific topic."
-Applied Mechanics Reviews

256 pages, © 1996

## Table of Contents:

1 Approximate Methods for Solution of the Radiation Transfer Equation

1.1 Spherical Harmonics Method. Basic Formulas of Approximations Employed

1.2 One-Dimensional Problems

1.2.1 Radiation of Isothermal Plane-Parallel Layer

1.2.2 Radiative Equilibrium in Plane-Parallel Layer

1.2.3 Radiation of Non-Isothermal Layer of Scattering Medium

1.3 Two-Dimensional Problems in Diffusion Approximation

1.3.1 Radiation of Isothermal Volumes

1.3.2 Radiation of Non-Isothermal Volumes of Scattering Medium. Calculation by Use of Finite Element Method

1.4 More Accurate Solutions of Two-Dimensional Transfer Problems with Determination of the Angular Radiation Intensity Dependence

1.4.1 Thermal Radiation of Non-Isothermal Disperse Systems

1.4.2 Propagation of Collimated Radiation in Scattering Medium

2 Radiative Properties of Some Disperse Systems

2.1 The Theory of Electromagnetic Radiation Absorption and Scattering by Individual Particles

2.1.1 Spherical Particles

2.1.2 Cylindrical Particles

2.2 Special Physical Features of Radiation Absorption and Scattering by Particles

2.2.1 Metal Oxide Particles in Visible and Infrared

2.2.2 Soot Particles, Coal Dust, Char, and Fly Ash

2.2.3 Metal Particles in IR and UHF

2.2.4 Water Droplets and Spherical Shells in UHF

2.2.5 Some Inhomogeneous Particles

2.2.6 Special Features of Light Absorption and Scattering by Filaments

3 Radiative and Combined Heat Transfer Problems

3.1 Thermal Radiation of Isothermal Disperse Systems

3.1.1 Spectral and Integral Emissivity of Two-Phase Combustion Products

3.1.2 Thermal Microwave Radiation of Disperse Systems on Sea Surface

3.2 Thermal Radiation of Two-Phase Flows

3.2.1 Radiation Heat Transfer in Hypersonic Nozzle

3.2.2 Thermal Radiation of Two-Phase Jet

3.3 Variation of Disperse System Temperature Due to Thermal Radiation

3.3.1 Radiative Boundary Layer in Scattering Medium

3.3.2 Radiative Cooling of Particle Flow in Vacuum

3.4 Combined Radiation and Convection Heat Transfer in Two-Phase Boundary Layer

3.4.1 Laminar Boundary Layer on Flat Plate. Solution in Self-Similar Variables

3.4.2 Turbulent Boundary Layer. Solution in Physical Variables

3.5 Some Other Problems of Radiative-Convective Heat Transfer

3.6 Radiative-Conductive Heat Transfer in High-Porous Fibrous Materials

3.6.1 Radiative Heating of Synthetic Filaments by Thermal Processing

3.6.2 Heat-Shielding Properties of Quartz Fibrous Material

Appendices. Computer Codes

A1 Thermal Radiation Heat Transfer in Plane-Parallel Layer of Polydisperse Medium

A2 Two-Dimensional Radiation Heat Transfer in Axisymmetrical Volume

A3 Light Absorption and Scattering by Homogeneous, Hollow or Two-Layer Spherical Particles

A4 Light Absorption and Scattering by Arbitrarily Oriented Homogeneous or Two-Layer Cylinders

A5 Combined Radiative-Conductive Heat Transfer in Plane-Parallel Scattering Layer

A6 Combined Radiative-Convective Heat Transfer in Turbulent Boundary Layer on Flat Plate