Transient Energy Transfer in a Gray Radiating Gas during Expansion
作者:
P. S. Lall,
R. Viskanta,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1967)
卷期:
Volume 10,
issue 1
页码: 98-107
ISSN:0031-9171
年代: 1967
DOI:10.1063/1.1762003
出版商: AIP
数据来源: AIP
摘要:
The problem of unsteady energy transfer during the expansion of a spherical mass of compressible, gray radiating gas at near‐atmospheric pressure is analyzed. The gas is assumed to be perfect and in local thermodynamic equilibrium. Scattering of radiation as well as ionization and dissociation phenomena are neglected. Energy transfer by conduction is assumed to be insignificant compared to that by radiation or convection. The formulation of the problem is based on first principles of radiative transfer and gas dynamics and is thus valid for a medium of arbitrary optical radius. A finite difference scheme is employed to obtain a first approximation to the solution of the conservation equations. The numerical results are presented graphically for a wide range of parameters of physical interest.
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