Accession Number : AD0639183

Title :   AN APPROXIMATE METHOD OF CALCULATING A THERMALLY INSULATED LAYER WITH ACCOUNT TAKEN OF RADIATION.

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Matuzok,G. A.

Report Date : 29 JUL 1966

Pagination or Media Count : 13

Abstract : The problem of calculating the heat field of the plate of a plate-insulator system radiating heat to the ambient medium is solved. Assuming that the thermal characteristics of the material are constant and the temperature gradient over the thickness is zero, the problem reduces to the solution of a one-dimensional equation of heat conduction with initial T = T sub zero and tau = zero. Veinik's approximate method is discussed, where the virtual temperature distribution over the thickness is approximated by a polynomial to find solutions for problems that cannot be solved by using exact methods. The heating process is divided into two stages: the first stage, where the change in temperature field spreads over the entire thickness of the insulator, and the second stage, where heating takes place simultaneously over the entire plate thickness. (Author)

Descriptors :   (*THERMAL INSULATION, *THERMAL RADIATION), APPROXIMATION(MATHEMATICS), POLYNOMIALS, USSR

Subject Categories : Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE