【作者】 陈雄； 杨智惠； 韩玉阁； 任登凤；

【Author】 CHEN Xiong;YANG Zhi-hui;HAN Yu-ge;REN Deng-feng;School of Energy and Power Engineering,Nanjing University of Science and Technology;

【机构】 南京理工大学能源与动力工程学院；

【摘要】 潜艇在海面形成的尾迹是红外探潜技术的基础。采用FLUENT中的VOF模型,主要对存在正温度梯度海水中无螺旋桨、有螺旋桨转动和排放冷却水三种情况的潜艇尾流进行数值模拟。获得了潜艇在不同情况下的水面兴波,并分析了海面和其他截面的温度场及流场分布。结果表明:在本文计算条件下,水面兴波主要受艇身影响,螺旋桨转动对温度分层海水的扰动随远离螺旋桨而增大,潜艇冷却水排放对海面温度场影响可以忽略,潜艇带螺旋桨转动时的海面冷特征较无螺旋桨时更明显。更多还原

【Abstract】 The submarine wake in sea surface is the basic of IR detection of submarines. In this paper, the submarine wake of no propeller, rotating propeller and exhausting hot water in the positive temperature gradient sea water are simulated by VOF model in FLUENT. The sea surface wave caused by submarine is obtained in this paper and the temperature field and flow field are analyzed in sea surface and the other faces. The result shows that the surface wave is mainly affected by the submarine body,and the perturbation in temperature gradient sea water caused by rotating propeller will become more and more obvious with the increasing distance to the propeller. For the temperature field in sea surface,the influence of hot water exhausting can be ignored. In the situation of a submarine with a rotating propeller,the cold characteristic in sea surface is more obvious than the situation without propeller.更多还原