Time-resolved temperature measurements in a laboratory flame using the optoacoustic beam-deflection method.
A method of obtaining time-resolved measurements of gas temperatures in a combustion environment is described. The noncontact optical laser-beam deflection technique utilizes rapid heating at a gas-solid interface as an acoustic source and is capable of acquiring localized temperature values at a repetition rate of >1 kHz. Measurements taken on a premixed propane-air laboratory flame show a 12.5-Hz thermal oscillation at the flame edge and no significant oscillation at the center.
Grosjean
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Systems Research Laboratories, Inc., 2800 Indian Ripple Road, Dayton, Ohio 45440-3696, USA.
Sarka
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Goss
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