船体黏性非均匀伴流场中螺旋桨非定常水动力性能预报研究  

Study of propeller unsteady performance prediction in ship viscous non-uniform wake

作　　者：沈海龙 苏玉民 

机构地区：[1]哈尔滨工程大学水下机器人技术国防科技重点实验室,黑龙江哈尔滨150001

出　　处：《水动力学研究与进展（A辑）》2009年第2期232-241,共10页Chinese Journal of Hydrodynamics

基　　金：水下智能机器人技术国防科技重点实验室资助

摘　　要：采用滑移网格技术模拟螺旋桨的旋转,使用CFD前处理软件ICEMCFD划分流场网格,运用基于求解RANS方程的CFD软件数值模拟了螺旋桨的水动力性能。预报了均匀流场中三个不同类型螺旋桨的水动力性能。针对非均匀伴流场采用两种不同的处理方法,研究了两个不同螺旋桨的非定常水动力性能。讨论了基于滑移网格技术的网格划分方法、边界层网格的处理方法和计算稳定性的判断方法等影响计算精度的关键因素,分析了不同湍流模式对预报结果的影响。预报结果显示,船体伴流场的不均匀性导致了桨叶表面压力分布随桨叶的位置不同而发生变化,且计算值和试验值吻合的很好。This paper presents using the sliding mesh technique to simulate the rotation of propeller and CFD pre-processor ICEM CFD to partition the flow filed mesh in RANS calculation of unsteady propeller performance. The hydrodynamic performance of three different propellers was predicted in uniform wake. Two different methods were employed to study two different propellers＇ unsteady performance in non-uniform wake. The key factors that influence the precision of calculation are analyzed which include the mesh partition method based on the sliding mesh technique, the disposal method of boundary layer mesh and the judgment method of calculation stability. The different turbulence models are analyzed which influence the prediction results. The predicted results are in good agreement with the experimental results.

关 键 词：CFD 滑移网格 螺旋桨性能 湍流模式 网格划分 非均匀伴流场 Y+值 

分 类 号：U661.313[交通运输工程—船舶及航道工程]