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Proceedings Paper

Numerical study of the compressible turbulent flow in a laser cavity
Author(s): G. Vlad; O. Boiron; G. Le Palec; Philippe Bournot
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Paper Abstract

This paper presents a numerical study of the flow structure and heat transfer in the discharge tube of a high power CO2 laser. A compressible turbulent model, in connection with simplified assumptions, was developed. The resulting set of partial differential equations describing the flow was solved by the PHOENICS code. Several types of thermal boundary conditions were tested and numerical results were found in good agreement with the experimental data obtained in a previous study. The location of the reattachment point was found to be highly correlated with the values of the turbulent energy and the dissipation rate of turbulent energy in the entrance section. The size of the recirculation zone and the shock waves created near the exit section of the nozzle have no significant effects upon the structure flow downstream the reattachment point.

Paper Details

Date Published: 31 March 1995
PDF: 6 pages
Proc. SPIE 2502, Gas Flow and Chemical Lasers: Tenth International Symposium, (31 March 1995); doi: 10.1117/12.204971
Show Author Affiliations
G. Vlad, Institut Mediterraneen de Technologie (France)
O. Boiron, Institut Mediterraneen de Technologie (France)
G. Le Palec, Institut Mediterraneen de Technologie (France)
Philippe Bournot, Institut Mediterraneen de Technologie (France)


Published in SPIE Proceedings Vol. 2502:
Gas Flow and Chemical Lasers: Tenth International Symposium
Willy L. Bohn; Helmut Huegel, Editor(s)

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