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利用二次流对流剪切激励主射流方式来产生射流对流推力矢量方法是一种效率很高的矢量化喷流新方法,又称为对流推力矢量法。本文运用三阶精度MUSCL TVD有限体积格式求解二维非定常、可压缩、雷诺平均N-S方程和Spalart-Allmaras湍流模型,计算了对流推力矢量喷管的超声速射流问题,获得几种不同二次流吸气压强下对狭缝和喷管肩部壁面压强分布、剪切层诱导旋涡的结构特征和主射流矢量角等结果,计算结果与实验数据对比取得良好的一致性,并对计算结果进行了详细分析和讨论。
Using secondary convection shearing to excite main jet to generate jet convection thrust vector method is a new efficient vector jet method, also called convection thrust vector method. In this paper, the unsteady, compressible, Reynolds-averaged Navier-Stokes equations and the Spalart-Allmaras turbulence model are solved by the third-order precision MUSCL TVD finite volume format. The supersonic jet problem of the convection thrust vectoring nozzle is calculated and several different secondary flow suction The pressure distribution on the pressure distribution on the wall of the slit and the shoulder of the nozzle, the structural characteristics of the induced vortex in the shear layer and the vector angle of the main jet, the calculated results are in good agreement with the experimental data, and the calculation results are detailed Analysis and discussion.