Simultaneous visualization of transonic buffet on a rocket faring model using unsteady PSP measurement and Schlieren method

K. Nakakita

doi:10.1117/12.2271145

20 February 2017 Simultaneous visualization of transonic buffet on a rocket faring model using unsteady PSP measurement and Schlieren method

K. Nakakita

Author Affiliations +

Proceedings Volume 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics; 1032810 (2017) https://doi.org/10.1117/12.2271145
Event: 31st International Congress on High-Speed Imaging and Photonics, 2016, Osaka, Japan

Abstract

Simultaneous visualization technique of the combination of the unsteady Pressure-Sensitive Paint and the Schlieren measurement was introduced. It was applied to a wind tunnel test of a rocket faring model at the JAXA 2mx2m transonic wind tunnel. Quantitative unsteady pressure field was acquired by the unsteady PSP measurement, which consisted of a high-speed camera, high-power laser diode, and so on. Qualitative flow structure was acquired by the Schlieren measurement using a high-speed camera and Xenon lamp with a blue optical filter. Simultaneous visualization was achieved 1.6 kfps frame rate and it gave the detailed structure of unsteady flow fields caused by the unsteady shock wave oscillation due to shock-wave/boundary-layer interaction around the juncture between cone and cylinder on the model. Simultaneous measurement results were merged into a movie including surface pressure distribution on the rocket faring and spatial structure of shock wave system concerning to transonic buffet. Constructed movie gave a timeseries and global information of transonic buffet flow field on the rocket faring model visually.

Citation Download Citation

K. Nakakita "Simultaneous visualization of transonic buffet on a rocket faring model using unsteady PSP measurement and Schlieren method", Proc. SPIE 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics, 1032810 (20 February 2017); https://doi.org/10.1117/12.2271145

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