Accession Number : AD0672521

Title :   THE STRUCTURE AND KINETICS OF THE H2-CO-O2 DETONATIONS.

Descriptive Note : Technical rept.,

Corporate Author : MICHIGAN UNIV ANN ARBOR GAS DYNAMICS LABS

Personal Author(s) : Lu,Pai-Lien ; Dabora,E. K. ; Nicholls,J. A.

Report Date : JUN 1968

Pagination or Media Count : 144

Abstract : 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)

Descriptors :   (*EXPLOSIVE GASES, DETONATIONS), (*DETONATION WAVES, PROPAGATION), HYDROGEN, CARBON MONOXIDE, OXYGEN, FLOW VISUALIZATION, SCHLIEREN PHOTOGRAPHY, REACTION KINETICS, QUENCHING(INHIBITION), LASERS, THERMOCHEMISTRY

Subject Categories : Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE