基于CFD的高速方尾船粘性阻力预报  

Prediction of frictional resistance of high-speed vessel with a transom stern based on CFD

作　　者：李志恒[1] 叶恒奎[1] 

机构地区：[1]华中科技大学船舶与海洋工程学院,湖北武汉430074

出　　处：《舰船科学技术》2011年第3期19-21,26,共4页Ship Science and Technology

摘　　要：随着社会经济的发展和科学技术的进步,人们对船舶航速的要求也日益提高,这引起了世界研究高速船的高潮。而高速船大多具有方尾,这使得方尾船粘性阻力预报的研究十分有意义。利用CFD软件,对文献[4]提供的b系列尾船型进行数值模拟,得到在低傅汝德数下,在不考虑自由液面情况时的摩擦阻力系数,粘压阻力系数以及形状因子,通过计算结果和船模实验的比较,验证了预报的有效性。同时,讨论了船型尺寸,双体船间距以及傅汝德数对粘压阻力的影响。With the economic advance and the development of the science and technology,the velocity of the ship is much more important,thus people ask for higher velocity nowadays.And the progress of the research in high-speed vessels has become faster.It is very important to improve the method for theoretical prediction of the wave resistance of transom-stern hulls,because a majority of high-speed vessels have transom-stern.Numerical simulation to high-speed vessel of b series detailed in reference[4] is carried out by using the CFD software.Through the simulation,we get frictional resistance coefficient,viscous pressure resistance coefficient and form factor at the low Froude number when we don＇t consider the condition of free levels.Compared with ship model experiment,the result is proved that the predicting is effective.We also discuss the influences of the size of ship model,separation between catamaran demihull and Froude number on frictional resistance.

关 键 词：高速方尾船 粘性阻力 CFD 

分 类 号：U661.3[交通运输工程—船舶及航道工程]