A Combined Measurement Method with PIV and Schlieren Technology on under Expanded Supersonic Jet

Abstract:

A combined measurement method with PIV and schlieren technology is described in this article. The velocity field and the shock wave structure can be obtained simultaneously with this combined measurement method by a synchronous time controller and the post-processing. The color schlieren can capture the instantaneous image effectively and clearly, while the PIV can calculate the time average velocity field and put out with the visual image. Both of them are ripe technologies, they can setup easily and even get some commercial groupwares. In this article, this combined measurement method study the under expanded supersonic jet successfully. Not only limit in the under expanded supersonic jet, this combined measurement method also can apply in the other supersonic flow. They are complementary advantaged to the investigation of supersonic flow.

• Periodical: Advanced Materials Research (Volume 346)
• Pages: 842-846
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.346.842
• Online since: September 2011
• Authors: Guan Lei Jiang, Ming Wen, Ji Fei Ye, Wen Tang Wu
• Keywords: Combined Measurement, PIV, Schlieren, Synchronous Controller, Underexpanded Supersonic Jet

References

[1] Ali Akturk, Akamol Shavalikul, and Cengiz Camci. PIV Measurements and Computational Study of a 5-InchDucted Fan for V/STOL UAV Applications, 47th AIAA Aerospace Sciences Meeting, Orlando, Florida, 5-8 January (2009).

DOI: 10.2514/6.2009-332

[2] Terrell, Charles A., Tabibi, Bagher M., et al. Non-intrusive optical diagnostic experiments for high-speed flow generator flowfield characterization, Computers and Electrical Engineering, vol. 26, no. 1, p.67–76, (2000).

DOI: 10.1016/s0045-7906(99)00023-3

[3] Stuart B Dalziel, Magda Carr, et al. Simultaneous synthetic schlieren and PIV measurements for internal solitary waves, Meas. Sci. Technol, vol. 18 p.533–547, (2007).

DOI: 10.1088/0957-0233/18/3/001

[4] Pankaj.S. Kolhe, Oleksandr Ivanchenko, et al. Experimental Measurement of Density, Pressure and Temperature fields in a Supersonic free jet using Rainbow Schlieren Deflectometry, 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, 7-10 January (2008).

DOI: 10.2514/6.2008-237

[5] Daniel Mitchell, Damon Honnery, and Julio Soria. Optical Measurements in Free and Impinging Underexpanded Jets, 13th Int Symp on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, 26-29 June, (2006).

[6] Jennifer Lynn Palmer. Temporally Resolved Velocimetry in a Shock Tunnel Free Jet By Planar Fluorescence Imaging Of Nitric Oxide, PhD thesis, The Department of Mechanical Engineering, Stanford University, (1999).