基于CFD法的对转螺旋桨敞水性能参数匹配研究

摘要：采用雷诺平均纳维-斯托克斯（RANS)法对B型螺旋桨和对转螺旋桨周围的粘性流场进行数值处理，运用Pro/E和GAMBIT软件分别进行三维建模和网格划分，并采用ORIGIN和TECPLOT后处理软件对结果进行图像处理。分析研究湍流模型对螺旋桨水动力性能的影响，对对转桨进行数值计算验证，同时对其敞水性能参数的匹配问题进行探讨，分析其尾流和速度场的变化情况。结果表明：SST 模型为较佳的湍流模型；对转桨在适当的桨距比和直径比的情况下，后桨可充分吸收前桨的尾涡能量，其推进效率明显提高。

Study on the open water perform Study on the open water performance of parameters matching of counter-rotating propellers based on the CFD method

Abstract: The numerical calculations, based on the CFD method, were conducted on B based on the CFD method and counter-rotating propellers to analyze the viscous flow field. Pro/E and GAMBIT were used to build 3D models and meshing, while the images were processed by ORIGIN and TECPLOT. Analyzing the open water performance of propellers with different turbulence models, the numerical calculation and parameters matching of counter-rotating propellers were researched. In addition, the wake flow and the change of velocity field were discussed. The result shows that the SST is superior to other turbulence models. Under the appropriate blade pitch ratio and diameter ratio, the tandem propeller can effectively absorb the energy of trailing vortex, and the propulsive efficiency can be improved obviously.