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原文传递 Boussinesq-Type Modeling of Low-Frequency Wave Motions at Marina di Carrara

题名：	Boussinesq-Type Modeling of Low-Frequency Wave Motions at Marina di Carrara
正文语种：	eng
作者：	Matt Malej;Fengyan Shi;Jane M. Smith;Giovanni Cuomo;Nigel Tozer
作者单位：	Coastal and Hydraulics Laboratory US Army Engineer Research and Development Center US Army Corps of Engineers 3909 Halls Ferry Rd. Vicksburg MS 39180;Center for Applied Coastal Research Dept. of Civil and Environmental Engineering Univ. of Delaware 259 Academy St. Newark DE 19716;Coastal and Hydraulics Laboratory US Army Engineer Research and Development Center US Army Corps of Engineers 3909 Halls Ferry Rd. Vicksburg MS 39180;HR Wallingford Howbery Park Wallingford Oxon OX 10 8BA UK;HR Wallingford Howbery Park Wallingford Oxon OX 10 8BA UK
关键词：	Harbor resonance; Boussinesq model; FUNWAVE-TVD; Infragravity wave; Marina di Carrara
摘要：	In this work, we carried out a case study of numerical simulations of low-frequency wave motions at the Marina di Carrara Harbor, where field observations have been conducted from 2005 to 2007. The fully nonlinear Boussinesq model, FUNWAVE-TVD, was applied to study the multiscale processes, including wind waves, infragravity waves, vortical eddies, and their potential effects on harbor operations. To reproduce the bound infragravity waves, the model was modified to take into account the second-order correction in wave generation based on weakly nonlinear second-order theory. Model-data comparisons show that the model correctly predicted the wave spectra in the low-frequency band and the overall long-wave energy inside the harbor. Additional numerical experiments, with different input wave characteristics, indicate that the directional spreading and incident wave direction play a role in predicting short waves inside the harbor, but have limited influence on the long-wave energy distribution, especially for the low-frequency band close to the resonant modes of the harbor. The second-order correction produces correctly the infragravity bands bounded with wave groups in the wave generation region. However, it does not modify the resonant modes and their magnitudes likely due to nearly "white" spectral structure, characterized by a nonzero constant power spectral density block or equivalently constant value/intensity of Fourier modes at different frequencies, in either bound or spurious infragravity waves.
出版年：	2021
期刊名称：	Journal of Waterway, Port, Coastal and Ocean Engineering
卷：	147
期：	6