Shock Tube Investigation of Ignition in Propane-Oxygen-Argon Mixtures.
AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO
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The ignition of propane-oxygen mixtures highly diluted with argon has been examined in the region behind a reflected shock wave in a single pulse shock tube. The measurements covered a temperature range of 1250-1600K at pressures varying from 2 to 10 atmospheres for mixture equivalence ratios of 0.125 to 2.0. For these conditions, observed induction times ranged from 12 to 600 microseconds. In one series of tests on a stoichiometric mixture, analyses were made of the shocked gas just prior to and immediately after ignition. These revealed that extensive pyrolysis of the propane preceded ignition. Mixture compositions and test conditions in this investigation were selected in such a manner that the influence of significant parameters on the ignition delay times could be clearly delineated. It was found that the experimental results of more than 150 tests were well correlated. Author
- Physical Chemistry
- Combustion and Ignition