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Proceedings Paper

Numerical analysis of vibrational nonequilibrium flows in supersonic nozzles of CO2 gas dynamic laser
Author(s): Yasuhiro Mizobuchi; Eiji E.O. Ogura; Tadaharu Watanuki; Hiroshi Kubota
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Paper Abstract

The effects of the supersonic nozzle shape on the performance of CO2 gasdynamic laser are analyzed by solving time-averaged two-dimensional Navier-Stokes equations coupled with the vibrational relaxation equations for a CO2 - N2 system. The solver is based on a finite difference method with an implicit high accuracy TVD scheme. Numerical simulations are carried out for various types of supersonic nozzles. The performance is estimated with the indicator of the small signal gain coefficient. The results show possibility of improvement for small signal gain coefficient by nozzle shape modification and suggest a suitable nozzle shape.

Paper Details

Date Published: 4 May 1993
PDF: 4 pages
Proc. SPIE 1810, 9th International Symposium on Gas Flow and Chemical Lasers, (4 May 1993); doi: 10.1117/12.144634
Show Author Affiliations
Yasuhiro Mizobuchi, Univ. of Tokyo (Japan)
Eiji E.O. Ogura, Univ. of Tokyo (Japan)
Tadaharu Watanuki, Univ. of Tokyo (Japan)
Hiroshi Kubota, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 1810:
9th International Symposium on Gas Flow and Chemical Lasers
Costas Fotakis; Costas Kalpouzos; Theodore G. Papazoglou, Editor(s)

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