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高温材料处理:国际期刊
SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.v3.i1.30
pages 25-37

RADIATION EMISSION OF THERMAL PLASMA IN 02, H20, C02 AND AIR

H. Riad
Departement d'Enseignements Generaux et Techniques, Ecole Mohammadia d'ingenieurs, Universite Mohamed V, Rabat-Agdal, Maroc
A. Cheddadi
Faculté des Sciences et Techniques de Settat, B.P. 577, Settat, Maroc
Y. Neghizadeh-Kashani
Universite Paul Sabatier, 118 route de Narbonne, F31062 Toulouse cedex 4, France
Alain Gleizes
Centre de Physique des Plasmas et de leurs Applications de Toulouse (CPAT) UMR n° 5002 − Université Paul Sabatier, 118 Route de Narbonne F31062 Toulouse Cedex 4 - France

ABSTRACT

We present the calculation of net radiation emitted by the hottest regions of various thermal plasmas, in which we consider that the molecules are dissociated. This computation have been effected, in the pure oxygen, water, carbon dioxide and air thermal plasmas assuming isothermal and local thermodynamic equilibrium (LTE) medium, by solving the radiative transfer equation. The results show that the nature of the species has a great influence on the net emission coefficient. In spite of the strong absorption of the resonance lines, these lines constitute in general the main contribution to the total net emission.


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