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利用时间推进的有限体积法求解三维雷诺平均Navier-Stokes方程,对激波诱导矢量控制方案的圆形收敛-扩张喷管全流场进行了数值模拟.从射流压强比及落压比的变化计算了次流对主流的控制效果.结果表明,利用激波诱导方式可有效的迫使主流偏转,在落压比为4、射流压强比为1.499时,矢量偏转角最大可以达到15.35°.通过分析,圆形喷管中形成的激波为三维曲面激波,结构比较复杂,数值研究可观察到清晰的流场结构,为试验研究提供参考.
The time-driven finite volume method is used to solve the three-dimensional Renault mean Navier-Stokes equations, and the numerical simulation of the circular converging-divergent nozzle full flow field in a shock-induced vector control scheme is performed. From the calculation of jet pressure ratio and pressure drop ratio The result shows that the shock wave can effectively force the main flow deflection, and the maximum deflection angle can reach 15.35 ° when the pressure drop ratio is 4 and the jet pressure ratio is 1.499.According to the analysis, The shock wave formed in a circular nozzle is a three-dimensional curved shock wave, the structure is relatively complicated, and a clear flow field structure can be observed by numerical study, providing a reference for experimental research.