1、二维水翼计算域如图32所示,所采用的翼型为NACA0015,其弦长c=O1m,攻角为6。10。弧形进口边距翼型前缘距离为5倍弦长,出口边距水翼尾缘距离为10倍弦长,上下边界相距12倍弦长,翼型位于上下边界的中心。2 NACA0015冲角为0.3.6.9度空化数计算:空化数取0.9,进口速度12m/s。进口速度;水密度;汽化压强(0.044bar);出口压强。时间步长:10-5s就选择clark-y翼型,弦长取70mm,三维计算展宽68mm9:08:58赵琴 2015-1-13 9:2维计算域可以和NACA0015类似方法建立,也可以画长700mm,高190mm的矩形区域,翼型前端距进口130m
2、m,高度中间,冲角为0(顺流平放)2015-1-13 9:The NACA66(MOD) was designed with a camber ratio of f/c = 0.020, a NACA meanline of a = 0.8 and a thickness ratio of t/c = 0.9, where f was the maximumthickness, t the maximumcamberand c the chord length of the hydrofoil section.3 水的汽化压强,空化数摘自-空化泡和超空化泡流动理论及应用4 NACA0015工况