CFD敞水螺旋桨性能计算分析

根据螺旋桨的投影原理及其型值参数,建立螺旋桨的三维模型。基于计算流体动力学(CFD)理论和CFD商业软件进行研究,采用分区混合网格方案和动网格技术及旋转坐标(MRF)方法,结合RANS方程和RNG湍流模型对螺旋桨三维粘性流动进行数值模拟,得到该螺旋桨的推力及其转矩。经与试验结果比较分析,证实该方法能实现对螺旋桨的敞水粘性流场模拟,预报其敞水性能。

CFD Analysis of Hydrodynamic Performance of Propeller in Open Water

According to projection theory and curved-surface offsets,a 3D geometry model of propeller was built.Based on computational fluid dynamics（CFD） method,the sub-domains hybrid meshes method,the dynamic meshes method and the moving reference frame（MRF） method were adopted to simulate the hydrodynamic performance of propeller in open-water by using the Reynolds-Averaged Navier-Stokes（RANS） equation and RNG turbulence models.Thrust and torque of the propeller in open water were obtained and compared with experimental results.The results show the proposed method can achieve the numerical prediction of hydrodynamic performance for propeller in open water.