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arXiv physics/0008236physics.flu-dynphysics.ao-ph
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浅水方程的平衡解

Equilibrium solutions of the shallow water equations

Peter B. Weichman, Dean M. Petrich

摘要:

本文描述了一种计算具有自由表面的基本二维流体流动模型浅水方程平衡解的统计方法。该模型包含一个竞争的声学湍流{ \it直接}能量级联和一个二维湍流{ \it逆}能量级联。它示出,尽管如此,正如在相应的理论中的无粘欧拉方程,无穷多的守恒量约束的流动足以产生非平凡的大尺度涡结构,这是一组明确推导出的耦合非线性偏微分方程的解决方案。

英文摘要:

A statistical method for calculating equilibrium solutions of the shallow water equations, a model of essentially 2-d fluid flow with a free surface, is described. The model contains a competing acoustic turbulent {\it direct} energy cascade, and a 2-d turbulent {\it inverse} energy cascade. It is shown, nonetheless that, just as in the corresponding theory of the inviscid Euler equation, the infinite number of conserved quantities constrain the flow sufficiently to produce nontrivial large-scale vortex structures which are solutions to a set of explicitly derived coupled nonlinear partial differential equations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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