THE STRUCTURE AND KINETICS OF THE H2-CO-O2 DETONATIONS.
MICHIGAN UNIV ANN ARBOR GAS DYNAMICS LABS
Pagination or Media Count:
The characteristics of self-sustained detonation waves propagating in H2-CO-2 mixtures was experimentally investigated. Two major, independent techniques were employed the side relief method and pulsed laser schlieren photography. The experimental results from both techniques show that the reaction zone thickness increases slowly at first as CO replaces H2 in H2-O2 mixtures. The laser schlieren data show that the reaction zone thickness increases exponentially with CO concentration after the CO exceeds about 75 of the total fuel. A simple relationship between the reaction zone thickness and the hydrogen concentration in the mixture was found. The chemical kinetic scheme in H2-CO-O2 mixtures was investigated by studying the quenching of detonations by the side relief technique and with interpretation by an explosion limit criteria. The results rule out the kinetic scheme involving ozone as proposed by Lewis and von Elbe. The Minkoff and Tipper scheme, which involved the formation of HCO, shows slightly better agreement with the results than that proposed by Buckler and Norrish. Author