期刊
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
卷 109, 期 2, 页码 235-244出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2007.08.026
关键词
nonequilibrium radiation; atmospheric entry; chemical nonequilibrium; plasma radiation; bound-free transitions
It is well known that the Kirchhoffs law, connecting emission to absorption through the Planck's function, is no more valid when the medium is not at local thermal and chemical equilibrium. The aim of the present paper is to analyze the effects of this nonequilibrium on radiative transfer, and in particular, for atmospheric air re-entry applications. A general formulation is proposed in the framework of multi-temperature description of the thermodynamic state of the gas mixture. Application of this model to simulate an earth re-entry experiment first leads to a reasonable agreement and then outlines important effects of chemical nonequilibrium, especially through bound-free transitions. (C) 2007 Elsevier Ltd. All rights reserved.
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