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本文从实际应用角度出发,提出了一种基于三维数值模拟,作用于动叶端区的控制体分析方法,可用于初步筛选不同轴流压气机周向槽机匣方案.在对失速机理是主流/泄漏流交界面在前缘溢出的认识基础上,确定了以动叶端区轴向动量作为衡量不同周向槽方案对压气机稳定性影响的特征量.在转子动叶端区设置一系列离散控制体,依照叶顶流动的影响区域来确定控制体的覆盖范围.通过观察有槽和无槽结构控制体上累加的轴向动量的变化,以跨音转子的多槽为例,分析比较了不同周向槽方案的扩稳能力.另一例子是对低速压气机利用该方法筛选出具有最佳扩稳能力的双槽,并以实验研究验证了这一分析方法的可靠性和潜力.
In this paper, a control body analysis method based on three-dimensional numerical simulation and acting on the end of rotor blades is proposed in this paper, which can be used for the preliminary screening of casing schemes of different axial flow compressor slots. / Leakage flow interface in front of the overflow on the basis of knowledge to determine the rotor end of the axial momentum as a measure of different circumferential groove program on the stability of the compressor characteristics of the variables in the rotor rotor blade end of a series of Discrete control body, and determine the coverage of the control body according to the influence area of the tip flow.According to the variation of the axial momentum accumulated on the control body with and without grooved structure, the multi-groove of the transonic rotor is taken as an example to analyze and compare Another example is the use of this method for low-speed compressors to screen out the best two-tank with the best capacity to stabilize and validate the reliability and potential of this analytical method with experimental studies.