title: Time-resolved temperature measurements in a laboratory flame using the optoacoustic beam-deflection method.
abstract: 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.
authors.affiliation: Systems Research Laboratories, Inc., 2800 Indian Ripple Road, Dayton, Ohio 45440-3696, USA.
authors.forename: D F
authors.initials: DF
authors.lastname: Grosjean
authors.forename: B
authors.initials: B
authors.lastname: Sarka
authors.forename: L P
authors.initials: LP
authors.lastname: Goss