Fully- and weakly-nonlinear biperiodic traveling waves in shallow water
Fully- and weakly-nonlinear biperiodic traveling waves in shallow water
复制标题
浅水中全非线性和弱非线性双周期行波
DOI:
10.1088/1873-7005/aa9e99
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发表时间:
2018
影响因子:
1.5
通讯作者:
T. Hirakawa and M. Okamura
中科院分区:
文献类型:
--
作者:
Suzuki Hiroki;Hasebe Koudai;Hasegawa Yutaka;Ushijima Tatsuo;T. Hirakawa and M. Okamura
We directly calculate fully nonlinear traveling waves that are periodic in two independent horizontal directions (biperiodic) in shallow water. Based on the Riemann theta function, we also calculate exact periodic solutions to the Kadomtsev–Petviashvili (KP) equation, which can be obtained by assuming weakly-nonlinear, weakly-dispersive, weakly-two-dimensional waves. To clarify how the accuracy of the biperiodic KP solution is affected when some of the KP approximations are not satisfied, we compare the fully-and weakly-nonlinear periodic traveling waves of various wave amplitudes, wave depths, and interaction angles. As the interaction angle θ decreases, the wave frequency and the maximum wave height of the biperiodic KP solution both increase, and the central peak sharpens and grows beyond the height of the corresponding direct numerical solutions, indicating that the biperiodic KP solution cannot qualitatively model direct numerical solutions for
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