潜艇指挥台围壳线型对尾流场的影响研究

Studyon the Effect of Sail on Flow Field of Submarine

指挥台围壳线型直接影响桨盘面处的伴流品质,对潜艇水动力和噪声性能产生较大的影响。为了探索潜艇指挥台围壳线型的优化设计规律,以全附体Suboff为对象,采用RANS方法结合SST k-ω湍流模型开展了指挥台围壳线型对潜艇尾流场的影响研究。数值计算结果表明角度设计适当的斜壁式指挥台围壳能够改善桨盘面伴流的均匀性,降低轴向速度波动的剧烈程度;指挥台围壳尖瘦的前缘形状不仅可以降低阻力,而且有利于提高螺旋桨的伴流品质。

Sail form directly affects wake field at propeller disk and has great effect on the hydrodynamic performance and noise of submarine. In order to explore the optimum design of submarine sail form, numerical study on the effect of sail on flow field of submarine is conducted using RANS method and SST k-ω turbulence mode based on full appendage suboff. It is shown that with the oblique arm sail of appropriate angle, the circumferential uniformity of the velocity component is im-proved and the fluctuation of axial velocity is decreased greatly. And the resistance can be reduced and wake quality can be improved via a sail with sharp leading edge.