基于RANSE的螺旋桨模型敞水数值模拟方法研究

Investigation on open-water CFD simulation method for propeller model by using RANSE solver

本文采用基于RANSE的船舶水动力学CFD求解器,开展螺旋桨模型敞水数值模拟研究,求解器采用基于Laplace权函数插值计算的交界面方法,实现不同计算域之间的耦合计算。以典型螺旋桨模型为对象,研究不同计算方法、网格形式,以及交界面位置对计算结果的影响,通过多方案的对比计算与分析,验证了Laplace权函数插值方法能够提高螺旋桨敞水计算稳定性,保证计算精度。同时给出了螺旋桨敞水性能数值计算的推荐方案,并采用推荐计算方案开展了螺旋桨模型敞水性能计算应用测试,结果与试验数据符合良好,初步建立了基于该水动力学CFD求解器的螺旋桨模型敞水数值模拟方法。

Some research work on open-water CFD simulation for a propeller model by using RANSE solver was presented in this paper.The solver adopted Laplace weight function interpolation method to implement the coupled computation of different domains.The effect of solving methods,mesh types and the location of grid interface on computational results was investigated based on typical propeller model.The results of calculation verify that the Laplace weight function interpolation method can improve the computational stability and ensure the accuracy of calculation.Meanwhile,a recommended computational method for open-water performance of a propeller was presented and applied to a typical propeller model.The computational results agreed well with the results of model test,which means the recommended computational method is reasonable and reliable.