This paper will first carry out experimental investigations on a test compressor which is a large-scale, two-stage and low-speed axial one to evaluate the participation of a novel casing treatment (stall precursor-suppressed casing treatment, SPS CT). The compressor performance for its pressure rise characteristics and efficiency are tested and illustrated. Besides, the time-averaged steady and the time-resolved unsteady measurement in this paper finally lead to some further analyses about the stall evolution of this compressor tending to uncover the process of the stall evolution and the mechanism of the SPS CT. The overall performance results indicate that the SPS CT can extend the compressor stall margin by 3%–11% with very limited efficiency loss. And the mechanism for such casing treatment has also been revealed as stall-precursor suppression by observing the evolution of the inception waves. In addition, modeling work have been conducted subject to the effects of SPS CT on the test two-stage axial compressor. The compressor stability model is able to investigate the effects of different geometrical parameters on the compressor stability and then make an optimal design for the SPS CT when it is applied on the test compressor.

本文将首先在大型，两级和低速轴向试验压缩机上进行试验研究，以评估新型套管处理（失速前驱体抑制套管处理，SPS CT）的参与性。测试并说明了压缩机的增压特性和效率。此外，本文的时间平均稳态和时间分辨非稳态测量最终导致对该压缩机失速演变的进一步分析，从而揭示了失速演变的过程和SPS CT的机理。总体性能结果表明，SPS CT可以将压缩机失速裕度提高3％–11％，而效率损失却非常有限。并且，通过观察起始波的演变，这种套管处理的机理也被揭示为失速前驱体抑制。此外，已经根据SPS CT对测试的两级轴向压缩机的影响进行了建模工作。压缩机稳定性模型能够研究不同几何参数对压缩机稳定性的影响，然后在将SPS CT应用于测试压缩机时对其进行优化设计。