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The Performance of the Self-Supplying Vortex Generator Jets on a High-Speed Compressor Cascade

  • Huaping Liu EMAIL logo , Yong Qin , Ruoyu Wang , Dongfei Zhang and Bingxiao Lu
Published/Copyright: February 21, 2019
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Abstract

The self-supplying vortex generator jet (SVGJ) is introduced to the separation control of a high-speed compressor cascade with an inlet Mach number of 0.67. A parametric investigation concerning the jet location and the injection angle is conducted numerically. The effect mechanisms of SVGJ on the cascade performance are analyzed in detail. The potentials of SVGJ at off-design points are also discussed. The vortex generated by the jet utilizing the pressure difference between the pressure surface and suction surface could enhance the fluid exchange between the boundary layer and the mainstream, thus weakening the flow separation and reducing the flow loss effectively. With a hole of diameter 0.5 mm and a jet-to-inflow mass flow ratio less than 0.3‰, the maximum loss reductions are 5.2 % at the design point and 8.0 % at the off-design point, validating the high efficiency of SVGJ. In this work, the optimum performance is obtained by the SVGJ located at xj/B=40 %, h/H=15 % with a skew angle of β=60°.

PACS: 2010; 47.85.L

Funding statement: This work is supported by the National Natural Science Foundation of China (Grant No. 51306042) and the Fundamental Research Funds for the Central Universities (Grant No. HIT.NSRIF. 2013092)

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Received: 2016-08-12
Accepted: 2016-09-14
Published Online: 2019-02-21
Published in Print: 2019-03-26

© 2019 Walter de Gruyter GmbH, Berlin/Boston

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