Nearshore coupled wave-current model based on new three-dimensional radiation stress formulation

被引:0
|
作者
Ji C. [1 ]
Zhang Q.-H. [2 ]
Ma D.-G. [1 ]
Wu Y.-F. [2 ]
Jiang Q. [3 ]
机构
[1] Key Laboratory of Engineering Sediment, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin
[2] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin
[3] CCCC First Harbor Consultants Limited Company, Tianjin
关键词
Coupled model; Surface roller; Three-dimensional radiation stress; Wave-current interaction; Wave-induced circulation; Wave-induced turbulent mixing;
D O I
10.3785/j.issn.1008-973X.2022.01.014
中图分类号
学科分类号
摘要
A three-dimensional coupled wave-current model was established based on a new three-dimensional radiation stress formulation including the beach slope effects in order to reasonably simulate the nearshore waves and circulations. Two kinds of surface roller models were implemented, and the wave-induced horizontal turbulent mixing effects were included in the coupled model. A number of experimental cases were used to validate the established model. The validation results show that the model can accurately simulate the nearshore wave propagation and various wave-induced circulation phenomena, including the wave setup, longshore current, undertow and rip current. The present wave-current coupling system can comprehensively describe the nearshore wave-current interaction, and the new three-dimensional radiation stress formulation used in the model can provide better performances than the other formulations for vertical flow structure simulations. The different surface roller models were used to obtain more accurate simulation results for different nearshore circulation cases, indicating that a more generally appropriate surface roller model requires further investigation. The wave-induced horizontal turbulent mixing can make the flow field smoother and avoid a too sharp velocity distribution. Copyright ©2022 Journal of Zhejiang University (Engineering Science). All rights reserved.
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页码:128 / 136
页数:8
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