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RESEARCH PAPERS: Gas Turbines: Heat Transfer

Contribution of Thermal Radiation to the Temperature Profile of Ceramic Composite Materials

[+] Author and Article Information
A. Tremante

Departamento de Conversión y Transporte de Energia, Universidad Simón Bolivar, Caracas, Venezuela

F. Malpica

Departamento de Termodinámica y Fenómenos de Transferencia, Universidad Simón Bolivar, Caracas, Venezuela

J. Eng. Gas Turbines Power 116(3), 583-586 (Jul 01, 1994) (4 pages) doi:10.1115/1.2906859 History: Received March 17, 1993; Online April 24, 2008

Abstract

The steady energy transfer equation for simultaneous conduction and radiation in an absorbing, emitting, and nonscattering gray planar medium is studied theoretically. For extremely high-temperature applications, where radiative transfer plays an important role, ceramic-matrix composites, considered as semitransparent materials, are being explored for potential use in turbine and compressor components, spacecraft structures, engine control systems, and nuclear reactors. Exact solution of the above-mentioned radiative problems is seldom possible and time-consuming numerical approximations are then used. A technique combining an accurate physical formulation, the two-flux model, coupled to a fast numerical procedure for the calculation of the temperature and heat fluxes is described.

Copyright © 1994 by The American Society of Mechanical Engineers
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