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本文选用性能较好的设计点马赫6三楔压缩二维进气道为基准模型,精心设计了设计点马赫6性能与基准模型相当,采用等压力梯度曲面压缩的二维进气道。数值模拟分析了两进气道在非设计点和非均匀来流下的流场和性能。结果表明:非设计点,采用等压力梯度曲面压缩二维进气道,其流量系数、总压恢复和压比均高于三楔压缩二维进气道;在非均匀来流下,采用等压力梯度曲面压缩二维进气道比基准进气道性能要好,低马赫数下起动性能也较好,值得进一步研究。
In this paper, Mach-6 three-wedge compression two-dimensional intake port with good performance is selected as the reference model. The design Mach-6 is designed with the same performance as the reference model and a two-dimensional inlet with equal pressure gradient surface compression. The numerical simulation analyzes the flow field and performance of the two inlets under non-design point and non-uniform flow. The results show that the non-design point, the pressure gradient surface of the two-dimensional intake port compression, the flow coefficient, the total pressure recovery and pressure ratio were higher than the three-wedge compression two-dimensional intake; in non-uniform flow, the use of equal pressure Gradient surface compression of two-dimensional inlet is better than the baseline intake port performance, starting performance at low Mach number is also better, worthy of further study.