Numerical study of the compressible turbulent flow in a laser cavity

G. Vlad; O. Boiron; G. Le Palec; Philippe Bournot

doi:10.1117/12.204971

31 March 1995 Numerical study of the compressible turbulent flow in a laser cavity

G. Vlad, O. Boiron, G. Le Palec, Philippe Bournot

Proceedings Volume 2502, Gas Flow and Chemical Lasers: Tenth International Symposium; (1995) https://doi.org/10.1117/12.204971
Event: Gas Flow and Chemical Lasers: Tenth International Symposium, 1994, Friedrichshafen, Germany

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.

Citation Download Citation

G. Vlad, O. Boiron, G. Le Palec, and Philippe Bournot "Numerical study of the compressible turbulent flow in a laser cavity", Proc. SPIE 2502, Gas Flow and Chemical Lasers: Tenth International Symposium, (31 March 1995); https://doi.org/10.1117/12.204971

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