考虑粘性和航态影响的单体复合船型运动预报

理论与试验研究表明,单体复合船型可以大幅提升舰船耐波性但对其静水阻力影响不大.如何准确预报该船型的运动性能一直是人们关心的问题.文中采用STF法预报深V船型与深V单体复合船型的纵向运动,研究表明,由于传统切片法基于势流理论,无法反映出复合船型组合附体的粘性效应,因此预报结果与试验结果有很大偏差.文中提出采用考虑枯性的CFD软件Fluent计算带有组合附体部分船体剖面的水动力系数,采用RANS方法计算组合附体的升力系数,同时考虑高速时船体航行姿态的影响进行修正.结果表明文中采用的预报方法可以有效提高单体复合船型运动预报精度.

Motion prediction of hybrid monohull considering viscous and bow up state effect

The theory and test researches indicate that hybrid monohull can greatly upgrade its seakeeping performance but with little influence to resistance in peace water.How to exactly predict the motion of this kind of ship is always the problem which people concern.In this paper,the longitudinal motion of deep-V and deep-V hybrid monohull is predicted using STF method.The researches indicate that traditional strip method can not reflect the viscous effect of built-up appendage because it bases on potential theor...