梢涡对拍动平板升力性能的影响

采用有限体积法求解黏性Navier-Stokes方程，以动网格方法基于弹簧变形原理结合拉普拉斯网格重绘方法光顺网格，分析了Re=100时2-D、3-D拍动平板的升力、阻力性能以及尾流场，并采用并行计算求解3-D问题以节省计算时间.通过计算旋转同步、滞后2种拍动模式下平板升力性能，以及拍板运动过程中流场压力分布的变化，探讨梢涡对拍板升力性能的影响.计算结果表明，在旋转滞后模式下梢涡使拍板的升力系数有较大增加，而旋转同步模式下仅使拍板的升力系数稍有增加，说明梢涡对拍板升力性能的影响与拍板运动参数有重要关系.

The Interaction of Tip Vortices with Lift of Flapping Plate

The lift,drag performance and flow structures of 2-D and 3-D flapping flat plate were calculated at the Reynolds number of 100.Navier-Stokes equations were solved by finite volume Method;the dynamic mesh method was taken to remesh the dynamic mesh in conjunction with the spring-based smoothing method and the Laplacian smoothing method.The parallel processing was applied to the 3-D cases to speedup the calculation.The lift performance of delayed rotation and synchronized rotation were calculated,the pressure...