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Proceedings Paper

Initiation of combustion and detonation by laser-induced electronical excitation of O2 molecules to the a1delta-g and b1-sigma-g+ states
Author(s): Alexander M. Starik; Nataliya S. Titova
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Paper Abstract

On the basis of developed physical and mathematical model for thermal nonequilibrium chemical processes involving electronically excited molecules the analysis of the mechanisms resulting in initiation of combustion in closed reactor and detonation in supersonic flow behind inclined shock wave in H2+O2(air) mixtures at excitation of the (see paper for formula) states of oxygen molecules by resonant laser radiation with wavelengths (lambda) equals1.268 micrometers and 762 nm has been carried out. The numerical analysis has shown that induced by laser radiation excitation of O2 molecules leads to significant decrease of the autoignition temperature and allows to initiate detonation at very low temperature (~500 K) behind shock wave at relatively small values of laser radiation intensity. Excitation of (see paper for formula) state by laser radiation is more effective to influence on combustion kinetics and initiation of detonation in supersonic flow.

Paper Details

Date Published: 13 September 2002
PDF: 12 pages
Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); doi: 10.1117/12.482135
Show Author Affiliations
Alexander M. Starik, Central Institute of Aviation Motors (Russia)
Nataliya S. Titova, Central Institute of Aviation Motors (Russia)

Published in SPIE Proceedings Vol. 4760:
High-Power Laser Ablation IV
Claude R. Phipps, Editor(s)

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