类水滴进口高超声速内收缩进气道设计及数值研究

采用压升规律可控的轴对称基准流场,结合流线追踪及截面渐变等技术设计了类水滴进口转圆形出口高超内收缩进气道构型,在设计点和接力点进行了数值模拟,并和设计参数相同的矩形转圆形内收缩进气道进行了比较.结果表明:设计点和接力点两者总体性能相当,类水滴进口进气道出口流场较均匀,并且具有更好的起动性能.此外,类水滴进口的几何非对称性造成了进气道整个流场结构的非对称.

Design and numerical investigation of hypersonic inward turning inlet with water-drop like shape intake

The water-drop like shape to circular shape transition hypersonic inward turning inlet has been designed with the technology of streamline tracing and gradual change section,using an axisymmetric basic flowfield with controllable pressure rising distribution.Numerical simulations were conducted on both design point and translation point,and the comparison of performance was performed with the rectangular to circular shape transition inward turning inlet with the same design parameters.The results indicate that two types of inward turning inlet have the roughly equivalent general performance,while the water-drop like shape intake has a more uniform exit flowfield and a better starting characteristic.Furthermore,the flowfiled structure of water-drop like shape intake is asymmetric due to the asymmetric geometry shapes.