FORMATION OF DETONATION WAVES IN FLOWING COMBUSTIBLE GASEOUS MIXTURES AND LIQUID-SPRAY MIXTURES.
Final rept. 1 Feb 65-31 Jan 66,
OHIO STATE UNIV COLUMBUS ROCKET RESEARCH LAB
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Detonation induction distances were determined in a 9-mm inside diameter detonation tube at an initial pressure of 1 atm at ambient initial temperature for hydrogen-oxygen mixtures flowing at initial velocities ranging from 1-100 meterssecond and for methane-oxygen mixtures flowing at velocities ranging from 0-30 meterssecond. Some experiments with hydrogen-oxygen mixtures were conducted at 5 atm initial pressure. The results show that the induction distances for hydrogen-oxygen mixtures decrease linearly with the logarithm of the Reynolds number based on the initial linear gas velocity. The induction distance of the detonation wave propagating upstream is shorter than that of the wave propagating downstream. Induction distances in methane-oxygen mixtures were essentially constant over the range of flow velocities employed. Certain observations seem to indicate that higher turbulence levels in the initial gas flow cause an effective decrease in the quenching diameter. Author
- Combustion and Ignition