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RESEARCH PAPERS: Gas Turbines: Ceramics

Analysis of the Temperature Profile of Ceramic Composite Materials Exposed to Combined Conduction–Radiation Between Concentric Cylinders

[+] Author and Article Information
A. Tremante

Departamento de Conversión y Transporte de Energía. Universidad Simón Bolívar, Caracas, Venezuela

F. Malpica

Departamento de Termodinámica y Fenómenos de Transferencia. Universidad Simón Bolívar, Caracas, Venezuela

J. Eng. Gas Turbines Power 120(2), 271-275 (Apr 01, 1998) (5 pages) doi:10.1115/1.2818115 History: Received March 01, 1997; Online November 19, 2007

Abstract

A numerical study is made of the thermal characteristics of semitransparent materials exposed to simultaneous conduction and radiation between concentric cylinders. 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. Through the use of a gray model and the two-flux method, specialized equations are developed that generate a system of nonlinear ordinary differential equations. To facilitate the solution of this system, an iterative strategy is adopted. In order to demonstrate the versatility and accuracy of the proposed methodology, the results of several numerical experiments are presented and compared with benchmark solutions.

Copyright © 1998 by The American Society of Mechanical Engineers
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