Accession Number : AD0618200

Title :   FORMATION OF DETONATION WAVES IN FLOWING COMBUSTIBLE GASEOUS MIXTURES.

Descriptive Note : Final rept. for 1 Dec 62-31 Jan 65,

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s) : Bollinger,Loren E. ; Smith,Gary C. ; Tomazic,Frederick J. ; Edse,Rudolph

Report Date : 22 APR 1965

Pagination or Media Count : 10

Abstract : Detonation induction distances were measured in hydrogen-oxygen and methane-oxygen mixtures flowing at various velocities through a 9 stainless steel tube, 9 mm inside diam. The linear flow velocities of the gas mixture ranged from 0-100 m/sec in hydrogen-oxygen mixtures. Some experiments were conducted at 5 atm initial pressure. Experiments with methane-oxygen mixtures were carried out at 1 atm only; the initial velocities of these mixtures ranged from 0-30 m/sec. It was found that the formation of detonation waves in flowing combustible gaseous mixtures is dependent upon the initial pressure and the intensity of turbulence present in the gases. As the initial pressure is raised, the effect of turbulence becomes less pronounced. Higher turbulence levels cause an effective decrease in the quenching diam as indicated in these experiments. Higher flow rates for a methane-oxygen mixture (50 per cent fuel) insure positive ignition and positive measurement of flame propagation rates. (Author)

Descriptors :   (*FUELS, DETONATION WAVES), (*DETONATION WAVES, EXPLOSIVE GASES), METHANE, OXYGEN, HYDROGEN, GAS FLOW, MIXTURES, TURBULENCE, IGNITION, FLAME PROPAGATION, QUENCHING(INHIBITION)

Distribution Statement : APPROVED FOR PUBLIC RELEASE