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The hydraulic jump and the shallow-water equations

机译:水力跃迁与浅水方程

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摘要

This is a study of the shallow-water equations in the context of standing hydraulic jumps in a planar geometry. The inviscid solutions are reviewed and it is demonstrated that the commonly used vertical averaging procedure leads to a closure problem. Inconsistencies associated with the vertical averaging procedure are also pointed out. We thus show that the recent solutions of the boundary-layer shallow-water equations provided in Dasgupta and Govindarajan (Phys Fluids 22:108-112, 2010) are consistent and correct.
机译:这是在平面几何结构中站立水力跃迁的背景下对浅水方程的研究。审查了无粘性解决方案,并证明了常用的垂直平均过程会导致封闭问题。还指出了与垂直平均过程相关的不一致性。因此,我们表明,在Dasgupta和Govindarajan(Phys Fluids 22:108-112,2010)中提供的边界层浅水方程的最新解是一致的和正确的。

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