| Citation: | WU Senlin, ZHAO Zheng, WANG Wenqi, et al. Experimental investigation of the influence of seal cavity leakage on a compressor performance[J]. Journal of Aerospace Power, 2025, 40（6）：20230036 doi: 10.13224/j.cnki.jasp.20230036
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An experimental investigation of the influence of seal cavity leakage on compressor was carried out on two compressors with variable inlet throttle ratio and cavity pressure respectively. The investigation results showed that seal cavity leakage flow rate increased with the decrease of inlet throttle ratio or the increase of cavity pressure. As the seal cavity leakage flow rate increased, the outlet pressure of main flow decreased and the blade wake area expanded near compressor hub, reducing the compressor performance. In a compressor experiment with multiple seal cavities, compared with the front seal cavity, the influence of leakage flow rate at rear seal cavity on compressor efficiency was greater, and the higher rotating speed indicated the greater influence.
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