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分别采用等压缩角和递增压缩角的小折线构成压缩型面。研究了二维均匀超声来流流过压缩面时的波后超声流场,结果表明,该方法能够形成弯曲激波且波后气流沿流向的壁面静压近似为等压力梯度,其等压力梯度程度取决于各小折线压缩角的配置。采用该方法生成的曲面压缩型面进气道附面层稳定性好,优于常规的平面压缩进气道。与二维常规平面压缩进气道相比,设计工况下,性能相当;非设计工况下,性能优于二维常规平面压缩进气道。
Compression profiles were constructed using small fold lines with equal compression angle and incremental compression angle, respectively. The results show that this method can form a bending shock wave and the hydrostatic pressure of the wall along the flow direction after the wave is approximately equal to the pressure gradient. The isostatic pressure gradient The degree depends on the configuration of the small corner line compression angle. The stability of the surface of the inlet of the curved compression surface generated by the method is better than that of the conventional planar compressed inlet. Comparing with two-dimensional conventional planar compression inlet, the performance is quite good under design conditions; under non-design conditions, the performance is better than two-dimensional conventional planar compression inlet.