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Proceedings Paper

Numerical Analysis On Gain Of C[sub]6[/sub]H[sub]6[/sub]-O[sub]2[/sub]-N[sub]2[/sub] Type GDL
Author(s): Masahito Tatsumi; Yasuhiro Wada; Shigeru Sato; Tadaharu Watanuki; Hirotoshi Kubota
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Paper Abstract

The two-dimensional vibrational non-equilibrium flow field and the nozzle shape effects on CO2 GDL (Gasdynamic Laser) performance are numerically analyzed by a point implicit scheme. It is shown that the Shock Free Minimum Length nozzle (SFML-nozzle) is superior to other nozzles in the viewpoint of GDL characteristics such as the small-signal gain and the maximum power available. Furthermore, the effects of combustion by-products such as O2,CO on the small-signal gain are investigated. It is concluded that such by-products have a negative effect on GDL gain characteristics. The effects of H20 concentration on the small-signal gain are also investigated considering H2O vibrational relaxation. These numerical analyses are performed for the predictions of CO2 GDL.

Paper Details

Date Published: 20 June 1989
PDF: 6 pages
Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); doi: 10.1117/12.950515
Show Author Affiliations
Masahito Tatsumi, University of Tokyo (Japan)
Yasuhiro Wada, National Aerospace Laboratory (Japan)
Shigeru Sato, IHI Research Institute (Japan)
Tadaharu Watanuki, University of Tokyo (Japan)
Hirotoshi Kubota, University of Tokyo (Japan)

Published in SPIE Proceedings Vol. 1031:
7th Intl Symp on Gas Flow and Chemical Lasers
Dieter Schuoecker, Editor(s)

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