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基于压气机叶尖间隙内的流动为Couette流动的实际情况,改进了适用于低速压气机的麻省理工学院Khalid叶尖泄漏堵塞预估模型;同时考虑叶尖泄漏流经过激波后堵塞迅速增加,发展了适用于跨声速压气机的叶尖泄漏流堵塞预估模型.对某低速轴流压气机单转子、跨声压气机单转子进行全三维黏性数值模拟,将计算得到的叶尖泄漏堵塞量与模型预测得到的堵塞量进行对比,结果表明此模型较Khalid模型能够更加准确地预测低速压气机的堵塞,同时能够用于预测跨声压气机叶尖泄漏流堵塞.
Based on the fact that the flow in the tip clearance of the compressor is Couette flow, the Khalid tip leakage plugging prediction model for low speed compressor is improved. At the same time, the tip leakage flow is rapidly increased after shock wave jamming , A prediction model of tip leakage flow jamming suitable for transonic compressor was developed.The full three-dimensional viscous numerical simulation of single-rotor and transonic compressor single-rotor of a low-speed axial compressor was performed and the calculated tip leakage The comparison between the blockage and the blockage predicted by the model shows that this model can predict the blockage of the low-speed compressor more accurately than the Khalid model, and can be used to predict the blockage of the cross-compressor tip leakage flow.