Accession Number : AD0826588

Title :   REACTION TIMES OF HYDROCARBON OXIDATION BEHIND INCIDENT SHOCK WAVES IN A SHOCK TUBE.

Descriptive Note : Rept. for 15 Jan-20 Oct 67,

Corporate Author : GENERAL DYNAMICS SAN DIEGO CA CONVAIR DIV

Personal Author(s) : Myers, B. F. ; Bartle, E. R.

Report Date : JAN 1968

Pagination or Media Count : 82

Abstract : An empirical relationship has been derived between the temperature, pressure, and composition existing behind an incident shock wave before chemical reaction begins and the 'reaction time' and 'ignition delay time' for the oxidation of propane. To obtain this relationship, the assumptions were made in the data reduction that shock wave attenuation and boundary layer growth had negligible systematic effects and that the coupling between the changing temperature, pressure and the extent of reaction could be adequately accounted for by a 'density step' model. Furthermore, the oxidation of propane is an exothermic process and this introduces fluid dynamic instabilities. Experimental evidence of these instabilities is presented for the oxidation of propane and criteria for these instabilities are applied to the conditions of the experiments.

Descriptors :   *HYDROCARBONS), (*SHOCK WAVES, CHEMICAL REACTIONS), (*SUPERSONIC COMBUSTION, PROPANE, OXIDATION, REACTION KINETICS, IGNITION LAG, EQUATIONS, SHOCK TUBES, FLUID DYNAMICS, COMBUSTION PRODUCTS, SPECTROSCOPY.

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE