【摘要】 本文以INSEAN E779A螺旋桨模型为研究对象，基于开源CFD软件OpenFOAM，使用RANS方法和Schnerr-Sauer空化模型对螺旋桨梢涡空化数值模拟的网格策略进行研究。首先对网格进行局部加密来提高梢涡区域的网格分辨率，进行数值模拟之后再基于Q准则来判断梢涡所处位置，并对梢涡区域的网格进行加密。在重新进行数值模拟后，将计算结果与试验结果进行对比。结果显示：螺旋桨梢涡空化数值模拟结果的推力系数、扭矩系数和梢涡空化形态与试验结果非常接近，可以明显看到梢涡空化卷起的现象和规律性收缩的节点。研究结果表明,本文建立的网格策略能够有效模拟较高精度的梢涡空化。更多还原

【Abstract】 The grid strategy of the numerical simulation of the propeller tip vortex cavitation(TVC) was studied based on the open source CFD software OpenFOAM, using the RANS method and the Schnerr-Sauer cavitation model. Tube refinement was used to improve the grid resolution of tip vortex field. After numerical simulation of the propeller tip vortex cavitation, the tip vortex field was marked based on the Q criterion, and then the grid of the tip vortex field was refined. The numerical simulation was performed again. The results show that the thrust coefficient, torque coefficient and tip vortex cavitation of the numerical results agree well with those of experimental results, and the phenomenon of tip vortex cavitation roll-up and regular contraction nodes are clearly observed. It is showed that the grid strategy used in this paper can effectively simulate the TVC of propellers.更多还原