摘要
采用二阶TVD格式的有限体积法耦合RNGκ ε湍流模型和非平衡壁面函数求解二维守恒型雷诺平均N S方程,数值模拟了运用次流推力矢量控制技术的二维收敛 扩张喷管中的流动现象。计算结果表明,随着喷管压比的增加,次流喷射所产生的激波向扩张段下游移动,且喷管矢量角不断减小到一固定值;次流压比的增加将导致激波向扩张段上游移动,且喷管矢量角不断增加;次流压比对激波和矢量角的影响比喷管压比更强。
The finite volume method with second-order TVD scheme was used to solve the 2D Reynolds average N-S equation by coupling RNS k-Ε turbulence model and non-equilibrium wall function. Flow phenomena in 2D convergent-divergent nozzle using secondary flow thrust vector control technology were numerically simulated. The calculation results show that the shock wave generated by secondary flow jet move toward downstream divergent section and the thrust vector angle gradually decreases to a preset value as the nozzle pressure ratio increases. Along with the increase of the secondary flow pressure ratio, the shock move toward upstream divergent section and the thrust vector angle gradually increases; the effect of the secondary flow pressure ratio on the shock wave and the thrust vector angle is stronger than the effect of nozzle pressure ratio.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2005年第1期29-32,共4页
Journal of Solid Rocket Technology
