中文摘要：

采用数值模拟的方法，仿真获得不同空泡形态下超空泡航行体的粘性阻力系数和压差阻力系数，利用这些系数，基于普通流线型航行体的阻力系数估算公式，进行重新拟合修正，形成超空泡航行体的阻力系数估算公式。将无空泡情况下的阻力系数估算公式代入自编的水下航行体弹道仿真软件，计算得到的超空泡航行体全沾湿状态下的水下弹道理论预报结果，与利用模型试验中的实测数据得到的弹道曲线一致性较好，说明数值模拟对超空泡航行体阻力系数的估算基本准确。

英文摘要：

The friction drag coefficient and form drag coefficient for the supercavitating body with different cavity profile were obtained by numerical simulation. With the empirical formula of drag coefficient based on the commonly streamline submerged body, the formula for the supercavitating body was modified to match with those of the numerical results. Using the formula, a sottware for underwater trajectory prediction was programmed. The underwater trajectory of the all-wetted supercavitating body were predicted by the software is consistent with the experiment results. It is shown that the modificatory formulae obtained by numerical calculation are reasonable.