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各位老师前辈好,最近在学习CFD,这个方程是一个势流求解方程,其中框中的微分求导顺序有点看不明白,以η为例,第一个求导时候需要对括号里的进行求导吗,第二个对dφ求导时是一阶导数还是二阶导数啊,可以给指导一下吗?谢谢了
属实没看明白。有一些教材,sci,写的就很晦涩。