A Model for the Propagation of Nonlinear Surface Waves over Viscous Muds
A Model for the Propagation of Nonlinear Surface Waves over Viscous Muds
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非线性表面波在粘性泥浆上的传播模型
DOI：
10.1016/j.coastaleng.2007.05.003
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发表时间：
2007
影响因子：
4.4
通讯作者：
K. Holland
中科院分区：
文献类型：
--
作者：
J. Kaihatu;A. Sheremet;K. Holland
薄粘性流体泥浆层近岸非线性波-波相互作用的影响进行了研究，使用抛物线频域非线性波模型，修改为纳入底部耗散机制的基础上的粘性边界层方法。边界层公式允许显式计算的泥诱导波阻尼率。该模型在实验室数据的基础上进行了测试，表现良好。数值试验表明，阻尼的高频波发生，介导的“差”的非线性相互作用。二维波浪在有限范围泥块上传播的数值模拟结果表明，波浪耗散引起了明显的下向波绕射效应。
The effect of a thin viscous fluid–mud layer on nearshore nonlinear wave–wave interactions is studied using a parabolic frequency-domain nonlinear wave model, modified to incorporate a bottom dissipation mechanism based on a viscous boundary layer approach. The boundary-layer formulation allows for explicit calculation of the mud-induced wave damping rate. The model performed well in tests based on laboratory data. Numerical tests show that damping of high frequency waves occurs, mediated by “difference” nonlinear interactions. Simulations of 2-dimensional wave propagation over a mud “patch” of finite extent show that the wave dissipation causes significant downwave diffraction effects.