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Effect of humidity on transonic flow

Huang, Jui-Che and Gault, Richard and Benard, Emmanuel and Raghunathan, Srinivasan Effect of humidity on transonic flow. (2008) Journal of Aircraft, vol. 45 (n° 6). pp. 2092-2099. ISSN 0021-8669

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Official URL: http://dx.doi.org/10.2514/1.37464

Abstract

An experimental investigation of the effects of humidity-induced condensation on shock/boundary-layer interaction has been conducted in a transonic wind-tunnel test. The test geometry considered was a wall-mounted bump model inserted in the test section of the wind tunnel. The formation of a lambda-shape condensation shock wave was shown from schlieren visualization and resulted in a forward movement of the shock wave, reduced shock wave strength, and reduced separation. Empirical correlations of the shock wave strength and humidity/dew point temperature were established. For humidity levels below 0.15 or a dew point temperature of 268 K, the effect of humidity was negligible. The unsteady pressure measurements showed that if a condensation shock wave formed and interacted with a main shock wave, the flow becomes unsteady with periodic flow oscillations occurring at 720 Hz.

Item Type:Article
Additional Information:Thanks to AIAA editor. The definitive version is available at http://www.aiaa.org Times Cited: 1, AIAA 46th Aerospace Sciences Meeting and Exhibit 07-10 Janv 2008, Reno, USA.
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > Queen's University Belfast (UNITED KINGDOM)
Other partners > University of Glasgow (UNITED KINGDOM)
Laboratory name:
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Deposited By: Emmanuel Benard
Deposited On:02 Mar 2011 11:20

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