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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 36 — Dec. 20, 2011
  • pp: 6697–6707

Simultaneous measurements of multiple flow parameters for scramjet characterization using tunable diode-laser sensors

Fei Li, XiLong Yu, Hongbin Gu, Zhi Li, Yan Zhao, Lin Ma, Lihong Chen, and Xinyu Chang  »View Author Affiliations


Applied Optics, Vol. 50, Issue 36, pp. 6697-6707 (2011)
http://dx.doi.org/10.1364/AO.50.006697


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Abstract

This paper reports the simultaneous measurements of multiple flow parameters in a scramjet facility operating at a nominal Mach number of 2.5 using a sensing system based on tunable diode-laser absorption spectroscopy (TDLAS). The TDLAS system measures velocity, temperature, and water vapor partial pressure at three different locations of the scramjet: the inlet, the combustion region near the flame stabilization cavity, and the exit of the combustor. These measurements enable the determination of the variation of the Mach number and the combustion mode in the scramjet engine, which are critical for evaluating the combustion efficiency and optimizing engine performance. The results obtained in this work clearly demonstrated the applicability of TDLAS sensors in harsh and high-speed environments. The TDLAS system, due to its unique virtues, is expected to play an important role in the development of scramjet engines.

© 2011 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(280.3420) Remote sensing and sensors : Laser sensors
(300.1030) Spectroscopy : Absorption
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: July 1, 2011
Revised Manuscript: September 25, 2011
Manuscript Accepted: October 3, 2011
Published: December 20, 2011

Citation
Fei Li, XiLong Yu, Hongbin Gu, Zhi Li, Yan Zhao, Lin Ma, Lihong Chen, and Xinyu Chang, "Simultaneous measurements of multiple flow parameters for scramjet characterization using tunable diode-laser sensors," Appl. Opt. 50, 6697-6707 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-36-6697

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