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Influence of full-span dual synthetic jets on the highly-turning compressor cascade

  

  • Received:2022-06-30 Revised:2022-09-26 Online:2022-09-30 Published:2022-09-30

Abstract: In order to effectively improve the performance of the high-turning cascade, a numerical simulation investigation on the application of dual synthetic jets for controlling the cascade loss was conducted. The effects of jet slots position, injection coefficient and excitation frequency on the control effect of dual synthetic jets were investigated. Results show that the dual synthetic jets can change the asymmetrical separation structure of the baseline cascade into a symmetrical structure. The periodic blowing and suction of the dual synthetic jets can cause the separation vortex on the suction side of the blade to periodically shed. Thus, the loss in the blade passage is significantly reduced. There is an effective control range for the position of the jet slots and the injection coefficient within which the control effect is significantly improved. And the reasonable excitation frequency can further improve the control effect. Full-span dual synthetic jets reduce the total pres-sure loss coefficient by up to 54.8%.

Key words: dual synthetic jets, flow control, high-turning cascade, compressor stator cascade, total pressure loss

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