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Proceedings Paper

Mixing/reacting zone structure and small signal gain coefficient of a supersonic flow chemical oxygen-iodine laser
Author(s): Wataru Masuda; Manabu Hishida; Naoki Azami; Hiroo Fujii; Toshio Atsuta
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Paper Abstract

The flow field of a supersonic flow chemical oxygen-iodine laser is simulated solving three-dimensional Navier-Stokes equations, and the dependence of the mixing/reacting zone structure and the resulting gain region on the effective velocity ratio of I2 jet to the primary flow is studied. It is assumed that the flow is laminar and the water vapor condensation due to the supersonic cooling is ignored. A chemical kinetic model encompassing 21 chemical reactions and 10 chemical species is used to determine the chemical composition of gas mixture. The I2He ratio and plenum pressure of the secondary flow are varied in order that the amount of iodine injected into the primary flow is kept constant in each effective velocity ratio. The present results demonstrate that a pair of contrarotating vortices generated behind the I2 jet greatly enhances the mixing and the simultaneous chemical reaction of I2 and O2(1$DELTA). It is shown that the optimum condition for the secondary I2 jet momentum exists. The I2 jet which causes the high gain penetrates into the primary flow moderately deeply and does not collide with the counter one.

Paper Details

Date Published: 4 April 1997
PDF: 4 pages
Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); doi: 10.1117/12.270135
Show Author Affiliations
Wataru Masuda, Nagaoka Univ. of Technology (Japan)
Manabu Hishida, Nagaoka Univ. of Technology (Japan)
Naoki Azami, Nagaoka Univ. of Technology (Japan)
Hiroo Fujii, Kawasaki Heavy Industries, Ltd. (Japan)
Toshio Atsuta, Kawasaki Heavy Industries, Ltd. (Japan)

Published in SPIE Proceedings Vol. 3092:
XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Denis R. Hall; Howard J. Baker, Editor(s)

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