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结合流线追踪技术和密切面混合函数提出了一种前缘水平投影可控的乘波体设计方法,并完成了前缘水平投影为超椭圆的乘波体(Waverider-F)和超椭圆前缘转超椭圆后缘的乘波体(Waverider-FT)设计。二者具有较高的容积效率,前缘对应的轴向投影近似为余弦曲线。通过数值仿真验证了设计方法的有效性,设计点时Waverider-F的乘波特性良好且保持了基准流场的特点,Waverider-FT前部完全乘波,后部两侧诱导激波使流场变形且形成高压区,接力点时二者的乘波特性也较好。另外,二者具有较高的升阻比和预压缩效率,设计点时无粘升阻比分别为3.46和2.88。与Waverider-F相比,Waverider-FT的升力、阻力和出口增压比都明显增加,而升阻比、俯仰力矩和出口总压恢复系数降低。有粘条件下,设计点的升阻比由2.91降为2.41,对应的出口总压恢复系数降低了5.8%。
Combining the streamline tracking technique and the intimate surface mixing function, a controllable multiplier body design method for frontal horizontal projection is proposed, and the Waverider-F and hyperellipsoidal frontal horizontal projection are completed. Waverider-FT design of edge of super-elliptical trailing edge. The two have high volumetric efficiency, the leading edge of the corresponding axial projection is approximately cosine curve. The validity of the design method is verified by numerical simulation. Waverider-F has good multiplicative characteristics and maintains the characteristics of the reference flow field. Waverider-FT fully multiplies the wave front and induces the shock wave Field deformation and the formation of high-pressure zone, the relay point when the two wave characteristics are better. In addition, the two have a higher lift-drag ratio and pre-compression efficiency, the design point without drag-resistance ratio were 3.46 and 2.88. Compared with Waverider-F, Waverider-FT’s lift, drag and outlet pressurization ratio are significantly increased, while the drag ratio, pitching moment and outlet total pressure recovery coefficient decreased. With sticky conditions, the lift-drag ratio at the design point is reduced from 2.91 to 2.41 and the corresponding total outlet pressure recovery factor is reduced by 5.8%.