Accession Number : AD0616156

Title :   A SIMPLE NUMERICAL SOLUTION FOR HEAT CONDUCTION IN A SOLID WITH A RECEDING SURFACE,

Corporate Author : LOCKHEED MISSILES AND SPACE CO SUNNYVALE CALIF

Personal Author(s) : Brogan,J. J.

Report Date : 20 AUG 1964

Pagination or Media Count : 2

Abstract : Recent interest in use of sublimation for cooling infrared detectors to cryogenic temperatures, and continued use of the ablation concept for thermal protection of re-entry vehicles, requires an accurate yet simple method of solution to problems of heat conduction in solids with a receding surface. General analytical solutions are not available and exact solutions are known only for the special cases. A simple numerical method of solution is described, and results of its application are presented in this note. The advantages of the present numerical method over others are the simplicity of its formulation and the ease of computation. Use of the present method permits 1) versatility in the selection of boundary conditions, e.g., a time-dependent moving boundary temperature can be incorporated easily and 2) computation without necessarily resorting to digital or analog computers. (Author)

Descriptors :   (*SPACECRAFT, COOLING), (*THERMAL CONDUCTIVITY, NUMERICAL METHODS AND PROCEDURES), ATMOSPHERE ENTRY, REENTRY VEHICLES, ABLATION, THEORY, INFRARED DETECTORS, SUBLIMATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE