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利用ＴＶＤ有限体积格式［１］数值模拟了弹体超声这绕流与底喷流相互干扰的复杂流场。采用四步Ｒｕｎｇｅ－Ｋｕｔｔａ时间推进多步法及“冻结粘性”技术，加速了迭代收敛，节省了计算机时。文中所显示的计算结果表明：方法得到的干扰流场激波结构十分清晰，包括在弹头部形成的附体激波，底部喷流与外绕流作用后形成的相交激波、反射激波等，同时文中亦给出了底喷流自由流场的波系结构。
The TVD finite volume format [1] is used to numerically simulate the complex flow field of the projectile ultrasonic wave which interacts with the bottom jet. Using the four-step Runge-Kutta time-push multi-step method and the “freeze-stick” technique, iteration convergence is accelerated, saving time on the computer. The calculation results show that the shock wave structure of the disturbed flow field obtained by the method is very clear, including the annex shock wave formed at the bullet head, the intersecting shock wave and the reflection shock wave formed by the bottom jet flow and the outward flow , At the same time, the paper also gives the wave structure of bottom flow free flow field.