动能
保守向量场
非线性系统
能量(信号处理)
物理
能量密度
机械
破碎波
经典力学
波传播
光学
量子力学
理论物理学
压缩性
标识
DOI:10.1098/rspa.2021.0544
摘要
This article presents results concerning the excess kinetic and potential energies for exact nonlinear water waves. In particular, it is proven, for periodic travelling irrotational water waves, that the excess kinetic energy density is always negative, whereas the excess potential energy density is always positive, in the steady reference frame. A characterization of the total excess energy density as a weighted mean of the kinetic energy along the wave surface profile is also presented.
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