A computational model of the cross-flow type singlet oxygen generator (SOG) for chemical oxygen-iodine laser (COIL) is developed. The reaction zone, in which basic hydrogen peroxide (BHP) jets flow downwards and chlorine flows transversely, is discretized in two dimensions. Chemical and physical processes are calculated in each cell, the gas and liquid transport is modeled by a geometrical transfer rule. The processes involved in this SOG model are surface reaction between the gas-phase chlorine and the liquid-phase HO₂- ion, surface ion renewal by the diffusion process, heat release by the chemical reactions, heat exchange between gas and liquid phases, water evaporation and condensation, homogeneous deactivation of O₂(¹Δ), and heterogeneous deactivations of O₂(¹Δ) by the liquid column surfaces. We develop a 80 mmol/s-class SOG to validate the developed model. It is shown that the Cl₂-O₂ conversion efficiency (utilization) and O₂(¹Δ)/O₂ ratio (yield) are in good agreement with the theoretical model in a wide range of operational conditions. Heterogeneous deactivation probability affects the model prediction markedly, and 1×10^-3 yields the best agreement with the experimental results. This supports the values in previous publications.

Date Published: 15 November 2010
PDF: 11 pages
Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 77510S (15 November 2010); doi: 10.1117/12.880736

Published in SPIE Proceedings Vol. 7751:
XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Tanja Dreischuh; Petar A. Atanasov; Nikola V. Sabotinov, Editor(s)