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结合附面层抽吸技术提出了低反动度、高负荷轴流压气机的概念。对比分析了此概念压气机与MIT的吸附式压气机的异同点,指出了该种压气机可能的应用方向,以及设计此类压气机的关键技术。采用此概念设计了一台单级低反动度的低速轴流压气机,并用全三维数值方法对流场进行了计算和分析,静叶栅中采用附面层抽吸技术控制分离。计算结果表明,附面层抽吸技术能较好地控制端区内的强三维分离流动,是改善大折转角静叶栅内流动的有效方法,从而也证明低反动度轴流压气机的概念是切实可行的。
The concept of low reaction and high load axial compressor is put forward in combination with the surface suction technique. The similarities and differences between this concept compressor and the MIT adsorption compressor are compared and analyzed. The possible applications of the compressor and the key technologies for designing such compressors are pointed out. Using this concept, a single-stage, low-reaction, low-speed axial-flow compressor was designed and the flow field was calculated and analyzed by a full three-dimensional numerical method. The stratospheric cascade suction technique was used to control the separation. The calculation results show that the technique of surface layer suction can control the strong three-dimensional separation flow in the end zone well and is an effective method to improve the flow in the large-angle corner cascade, which also proves the concept of low-reverse-flow axial compressor Is feasible.