肥大型船伴流场数值模拟的网格划分方法研究  

Mesh partition methods for numerical simulation of the flow fields of full form ships

作　　者：沈海龙 苏玉民 

机构地区：[1]哈尔滨工程大学水下智能机器人技术重点实验室,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2008年第11期1190-1198,共9页Journal of Harbin Engineering University

基　　金：哈尔滨工程大学水下智能机器人技术重点实验室基金资助项目

摘　　要：船体伴流场的预报与分析,对于螺旋桨的减震降噪、螺旋桨推进效率的提高是至关重要的.为寻求适合肥大型船伴流场的数值预报方式,使用通用CFD前处理软件ICEM CFD探讨了某肥大型船伴流场数值模拟的网格划分方法,并对影响该肥大型船尾部伴流场的一些关键网格的划分做了比较和分析.通过不同网格划分方法所得到的数值结果与实验结果的比较,得出了适合肥大型船伴流场的网格划分方法.同时,为验证该网格划分方法的适用性,对某化学品运输船和集装箱船的桨盘面伴流场进行了预报,其结果与试验值符合良好.三条船伴流场的数值结果表明,该网格划分方法在肥大型船粘性伴流场的预报上具有适用性.Analyses and prediction of ship＇s wakes are important for propeller design to provide efficiency enhancements and absorption of shock and noise. A numerical method specially used for prediction of flow fields of full form ships was developed, in which the mesh partition methods for numerical simulation were studied using the computational fluid dynamics （CFD） pre-processor ICEM CFD. The key mesh partition methods, which influenced the wake field of the full form ship, were compared and analyzed. Mesh partition methods appropriate for the flow fields of full form ships were obtained by comparing the results of different mesh partition methods. Once this was done, wake velocity from the propeller discs of an actual chemical tanker and a container vessel were simulated to validate the applicability of the mesh partition methods. The results of the simulation had good agreement with measured wake velocity. The results indicated that this mesh partition method is effective for flow field prediction for full form ships.

关 键 词：CFD 伴流分数 尾流场 肥大型船 网格划分 

分 类 号：U661.313[交通运输工程—船舶及航道工程]