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对前缘钝化后的乘波体在非设计状态下的气动性能进行了研究。乘波体的生成基于三维粘性流场,以乘波体上表面底部基线为参数化几何建模对象对乘波体进行设计和优化。采用改进的Tincher钝化方法对优化后的乘波体进行前缘钝化。利用CFD方法对设计马赫数6、巡航高度20 km的乘波体在马赫数4～8、迎角-6°～8°、飞行高度10～30 km非设计状态下的气动性能进行了数值模拟,对比分析了前缘钝化对乘波体非设计状态下性能的影响,得出了前缘钝化后乘波体气动性能随各因素的变化规律。研究结果表明:前缘钝化后乘波体的气动性能略有下降,但非设计点气动性能随各因素的变化规律与钝化前基本相同。
The aerodynamic performance of the inversed wave front body in non-designed state was studied. Multiplicative Waveform Generation Based on the three-dimensional viscous flow field, the wavefront is designed and optimized by taking the base of the upper surface of the wavebody as the parametric geometric modeling object. The improved Tincher passivation method is used to conduct the leading edge passivation on the optimized multiplied wave body. The CFD method is used to simulate the aerodynamic performance of a multi-wave body designed with a Mach number of 6 and a cruising altitude of 20 km in a non-designed state with Mach number of 4 ~ 8, angle of attack of -6 ° ~ 8 ° and flight altitude of 10 ~ 30 km , The influence of leading edge passivation on the performance of multiplying wave body in non-designed state is analyzed and compared, and the change law of the aerodynamic performance of the multiplying wave body with each factor after the leading edge passivation is obtained. The results show that the aerodynamic performance of the waverider body decreases slightly after passivation of the leading edge. However, the aerodynamic performance of the non-designed point changes with each factor basically the same as before passivation.