Temperature measurements by CARS and intrusive probe in an air-hydrogen supersonic combustion

Static and stagnation temperature measurements are performed by CARS and by an intrusive probe in a Mach 2 cylindrical jet of hydrogen, injected into a Mach 2 coflow of air. The single-shot CARS static temperature measurement s are based on nitrogen. A stagnation temperature probe has been developed and tested. This method consists in identifying the transient regime of a t hermocouple probe with a numerical prediction modeling the high speed effec ts on the probe recovery factor. The paper presents and discusses the compa rison between the temperature measurements performed by the intrusive probe and the CARS non-intrusive techniques (1) at the inlet of the combustion c hamber, (2) in the ignition zone of the hydrogen jet; (3) in the burnt gase s. (C) 2001 Elsevier Science Ltd. All rights reserved.