Detached Eddy Simulation is used to study the interaction flowfields of a supersonic lateral jet penetrating into the crossflow of projectiles with cruciform or X-type fin configurations at $${\text{Ma}} = 0.3$$ and $$\alpha = 0^\circ ,30^\circ \sim 60^\circ$$ . For $$\alpha = 0^\circ$$ , typical flow structures such as barrel shock, Mach disk and counter-rotating vortex pair(CVP) induced from the jet orifice are observed. Asymmetrical flowfields downstream of the jet for $$\alpha = 30^\circ$$ are analyzed, as well as the pressure distribution on the surfaces of all the projectiles. The reason why the CVP mentioned above disappears in this condition is also proposed. The variations of the normal forces acting on these projectiles are pointed out. The investigations into the amplification factor and the control efficiency of the jet force show that X-type fin configuration is more beneficial to maintain attitude for projectiles at large angle of attack.

中文翻译：

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大攻角不同尾翼亚音速弹体超音速横向射流相互作用的数值研究

分离涡流模拟用于研究超音速横向射流在 $${\text{Ma}} = 0.3$$ 和 $$\alpha = 0 处穿透具有十字形或 X 型鳍配置的射弹的横流的相互作用流场^\circ ,30^\circ \sim 60^\circ$$ 。对于 $$\alpha = 0^\circ$$ ，观察到典型的流动结构，如桶激波、马赫盘和由射流孔口引起的反向旋转涡对（CVP）。分析了射流下游 $$\alpha = 30^\circ$$ 的不对称流场，以及所有射弹表面的压力分布。还提出了在这种情况下上述CVP消失的原因。指出了作用在这些射弹上的法向力的变化。