鱼雷推进性能的经验公式与计算流体力学预测

采用理论预测和计算流体力学（CFD）2种方法对某型导管推进器的鱼雷推进性能和雷体、推进器的水动力性能进行预测分析.结果表明：在航速10.29~25.72 m/s条件下，通过CFD计算的无附体雷体阻力系数与平板摩擦阻力系数和剩余阻力系数之和相差5.2%，即适用于雷型特征的阻力经验公式的精度较高；在进速系数为1.6~2.0时，导管推进器敞水性能曲线的CFD计算值与实验值较吻合，误差小于5%；通过CFD法计算的雷体尾流中推进器的推力、力矩和推进效率与适用于对转桨推进鱼雷经验公式的计算值相差均小于5%，说明适用于对转桨推进鱼雷的推进性能经验公式也适用于导管推进器.

Empirical Formulas Prediction and CFD Calculations of Torpedo's Propulsion Characteristics

Both empirical formulas and CFD calculation were used to predict torpedo's propulsion characteristics and the hydrodynamics of the bare hull and the ducted propulsor.The result shows that within the speed from 10.29 to 25.72 m/s the difference between numerical calculated drag coefficient of the ball hull and the sum value,which is friction resistance coefficient of a flatplate and the rest drag coefficient,is less than 5.2%,which shapes the precision and reliability of the drag formula suitable for the pro...