Accession Number : AD0618220

Title :   TEMPERATURE DISCONTINUITIES AND ENERGY TRANSFER IN ONE-DIMENSIONAL RADIATION PROBLEMS,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID MECHANICS LAB

Personal Author(s) : Pan,Yuan-siang

Report Date : JUN 1965

Pagination or Media Count : 1

Abstract : A formulation for the temperature (or emissive power) distribution and radiative energy flux is given for a radiating grey gas layer bounded by two parallel black surfaces. The gas temperatures at the surfaces are solved exactly by using the Laplace transform. The temperature of the gas at the surface is, in general, not equal to the surface temperature. The temperature discontinuity is made up of the sum of two terms, an exponential of the optical thickness of the gas layer and an integral of an exponential of the optical thickness. An analytic solution for the energy flux is obtained by assuming an approximate temperature (or emissive power) distribution function. Results for the temperature (or emissive power) discontinuities and energy flux are presented as a function of the gas layer optical thickness. Comparisons with numerical results and other approximate calculations are made. (Author)

Descriptors :   (*GASES, HEAT TRANSFER), (*HEAT TRANSFER, GASES), EMISSIVITY, BLACKBODY RADIATION, ENERGY, THERMAL RADIATION, TRANSPORT PROPERTIES, OPTICS, SURFACE TEMPERATURE, THERMODYNAMICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE