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Evaluation of Lifetime-based Pressure-Sensitive Paint Measurement in Low-speed Flow

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3 Author(s)
Yamashita, T. ; Tohoku Univ., Sendai ; Nagai, H. ; Asai, Keisuke

The lifetime-based method has been applied to pressure-sensitive paint (PSP) measurement in low-speed flow. Based on theoretical considerations and sample tests, a method to calculate pressure using "a-priori" method was proposed. In this method, pressure is related to the ratio of the luminescent intensity ratios obtained at two different gates between the wind-on and wind-off conditions, multiplied by a temperature correction factor calculated from the single-point measurement of model substrate temperature. The sample tests showed that the effect of temperature as well as non-uniformity of lifetime could be cancelled out by the proposed method. In order to evaluate the effectiveness of this method, a simplified car model was tested in a low-speed wind tunnel. The result obtained by the lifetime method was in good agreement with those of pressure taps and the intensity method.

Published in:

Instrumentation in Aerospace Simulation Facilities, 2007. ICIASF 2007. 22nd International Congress on

Date of Conference:

10-14 June 2007

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