密切曲面锥乘波体——设计方法与性能分析

OSCULATING CURVED CONE(OCC) WAVERIDER:DESIGN METHODS AND PERFORMANCE ANALYSIS

介绍了密切曲面锥(osculating curved cone,OCC)乘波体的设计方法,并对密切曲面锥乘波体的流场结构及气动特性进行了分析.密切曲面锥方法采用具有直线激波和等熵压缩波系的曲面锥作为基准流场,在定义乘波体激波型线(inletcapture curve,ICC)和前缘捕获型线(front capture tube,FCT)后,采用密切轴对称和流线追踪技术,设计生成密切曲面锥乘波体.采用数值方法对设计的密切曲面锥乘波体进行了模拟,理论设计结果和数值模拟结果一致.对密切曲面锥乘波体和密切锥乘波体进行了比较,密切曲面锥乘波体克服了密切锥乘波体压缩量不足及容积率偏小的缺点.

The osculating curved cone （OCC） waverider design methods are put forward in the present paper. The flow field structure and aerodynamic characteristics of OCC waverider are also analysed. The OCC waverider uses curved cone as basic osculating flow field in which has straight shock wave and isentropic compression wave structures. The osculating axisymmetric and streamline tracing techniques are used to generate the OCC waverider when defining the inlet capture curve （ICC） and front capture tube （FCT）. Computational fluid dynamic （CFD） methods are used to simulate the designed OCC waverider. Theoretical design results agree well with numerical simulating results. The comparisons are also made between osculating cone （OC） waverider and OCC waverider. It is show that OCC waverider overcomes the disadvantages of low compression abilities and small volumetric capabilities which OC waverider has.