类水滴进口高超内收缩进气道参数化分析

基于马赫数分布规律可控的轴对称基准流场,使用流线追踪和截面渐变方法设计了进口截面形状非对称的类水滴形进口转圆形出口高超内收缩进气道,研究了设计参数横向位置d,纵向位置h和进口形状曲线参数a对性能的影响规律。在相同约束条件下对比了类水滴形进口进气道与常规矩形转圆、方形转圆进气道的性能差异。结果表明:在设计点,所研究的设计参数对类水滴进口进气道总体性能影响显著;在捕获面积和内收缩比相同的情况下,类水滴进口进气道综合性能明显优于常规矩形转圆、方形转圆进气道。

Parametric Analysis of Hypersonic Inward Turning Inlet with Water-Drop Like Shape Intake

The hypersonic inward turning inlet with water-drop like shape to circular shape tr ansition is designed with the technology of streamline tracing and gradual change section, based on the axisymmetric basic flow field with controllable Mach number distribution law.The effects of transverse position d, the lengthway position h and the inlet curve parameter a are analyzed. The inlet with rectangular to circular shape transition is designed under the same condition and compared with the water-drop like shape to circular shape transition inlet. The results show that the studie parametersd have great effect on the overall performance of the water-drop like shape to circular shape transition inlet at the design point, and the overall performances of the inlet is obviously better than that with the rectangular to circular shape transition inward turning inlet in conditions of the same capture area and internal contraction ratio.