船舶工程

基于STAR-CCM+软件建立X舵潜艇水平面回转操纵运动三维数值模型，开展潜艇直航阻力数值模拟，并将其与经验公式结果进行对比，验证数值模拟结果的准确性。在此基础上，数值模拟潜艇不同航速下以15°舵角水平面回转，研究X舵内侧舵与外侧舵的回转性能。模拟结果显示：潜艇在不同航速、相同舵角下水平面回转运动时，外侧舵方案回转周期、战术直径、进距及正横距等回转参数均优于内侧舵方案5%以上；潜艇低速回转时，内侧舵定常回转直径优于外侧舵，而高速回转时，外侧舵定常回转直径优于内侧舵5%以上。该方法适用于潜艇性能研究，研究结果可为潜艇实际操纵提供参考。

With STAR-CCM+ software, a three-dimensional numerical model on horizontal turn maneuvering for X-rudder submarine is established and the numerical simulation of the submarine's direct navigation resistance is carried out. The accuracy of the numerical simulation results are verified by comparing with the empirical formula results. Based on these, the horizontal turn maneuverability of inner and outer rudder by simulating numerically the submarine horizontal turning at 15° of rudder angle with different speed is investigated. The simulation results show that, in the horizontal rotary motion of submarine with different speed and the same rudder angle, the turning parameters of the outer rudder like the turning period, tactical diameter,advance and transfer, are more than 5% better than the inner rudder. For the steady turning diameter, the outer rudder has the same results like the first four parameters when the submarine turns at high speed, but the inner rudder is more than 5% better than that of the outer rudder when the submarine turns at low speed. The research method is suitable for submarine performance study, and the research results can provide references for the actual operation of submarine.