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最近一篇帖子《关于DNS计算的几个基本问题》by何奎(谢菲尔德大学工程学院机械系):根据谱方法的经验,需要满足流向网格间距Δx+< 15, 展向网格间距Δz+< 8,壁面方向网格尺度需要满足第一个网格点在y+<1而头十个网格点在y+<10范围内。
壁面方向y+的定义随处可见,那请问流向网格间距Δx+,展向网格间距Δz+是怎么定义的呢?请大神不吝赐教。谢谢!!
@hhj0219 和y+定义一样。其实就是:流向网格间距除以壁面第一层距离,然后再乘以y+。