可再生能源2017，Vol.35Issue(7)：1094-1100,7.
超临界雷诺数下旋转圆柱绕流的三维大涡
Three-dimensional large eddy simulation of flow around a rotating circular cylinder under supercritical Reynolds number
摘要
Abstract
Under the supercritical Reynolds number, the separation of the turbulent boundary layer in the downstream of the cylinder leads to some difficulties in the process of solving the RANS algorithm. However, in engineering practice, most of the flow around a bluff body occurs with a high supercritical Re especially in ocean power generation tower and the blunt trailing edge of wind turbines. Based on Fluent software and its large eddy simulation (LES) method, three dimensional numerical simulation of rotating cylinder was carried out with different rotating speed ratio under R e=3.5 ×106. Then, the simulation results were compared with those of the related literatures, and the accuracy of the simulation results was verified. The results show that the lift caused by the Magnus effect has an inhibitory effect on the development of the downstream in the rotation of the cylinder. When the rotational speed is greater than 10, the regular Karman vortex street is no longer occurring in the downstream of the rotating cylinder.关键词
超临界雷诺数/旋转圆柱绕流/三维大涡模拟/马格努斯效应/水动力学特性Key words
supercritical Reynolds number/flow around a rotating cylinder/large eddy simulation/Magnus effect/hydrodynamic characteristics分类
能源科技引用本文复制引用
程友良,汪辉,赵洪嵩..超临界雷诺数下旋转圆柱绕流的三维大涡[J].可再生能源,2017,35(7):1094-1100,7.基金项目
2013海洋可再生能源专项资金(LNME2013JS01) （LNME2013JS01）
国家自然科学基金(11232012). （11232012）
