In combination with the percolation characteristics in near bottom-hole area, radical grid was treated with logarithmic method.
考虑井底附近的渗流特点，对径向网格采用径向等对数划分的方法进行了处理。
It estimates the forces acting on APDS in the muzzle field and calculates the movement of sabot and rod. It also analyzes the effect of gas hole area on the time of sabot discarding.
对某航炮用气推弹在膛口流场中的受力进行了工程估算，并计算了该弹的脱壳运动情况，分析了气孔面积对脱壳时间的影响。
It estimates the forces acting on APDS in the muzzle field and calculates the movement of sabot and rod. It also analyzes the effect of gas hole area on the time of sabot discarding.
对某航炮用气推弹在膛口流场中的受力进行了工程估算，并计算了该弹的脱壳运动情况，分析了气孔面积对脱壳时间的影响。
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