Color Schlieren System Using Square Color Filter And Its Application To Aerofoil Test In Transonics

Chen Ruiyi; Ge Zhoufang

doi:10.1117/12.969217

7 June 1989 Color Schlieren System Using Square Color Filter And Its Application To Aerofoil Test In Transonics

Chen Ruiyi, Ge Zhoufang

Proceedings Volume 1032, 18th Intl Congress on High Speed Photography and Photonics; (1989) https://doi.org/10.1117/12.969217
Event: 18th International Congress on High Speed Photography and Photonics, 1988, Xi'an, Shaanxi, China

Abstract

This paper describes the principle of the color schlieren technique which uses a piece of square color filter for the source mask and a square hole for the cutoff mask. From the viewpoint of chromatics theory, this paper also describes the relatioship between the color of the element on the image and the deflection of the emitting light rays, and the formulus of the amount and the direction of deflection of the light rays are given. In addition, this paper describes in details the application of the technique to a test of transonics flow around a NACA 0012 aerofoil. The result compare with the surface pressure measurement by the sensor. Apart from the consistency between the two methods being used, the shock wave and the Mach lines shown directly in the present method can complement and revise the results taken by the pressure sensor.

Citation Download Citation

Chen Ruiyi and Ge Zhoufang "Color Schlieren System Using Square Color Filter And Its Application To Aerofoil Test In Transonics", Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); https://doi.org/10.1117/12.969217

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