期刊
COASTAL ENGINEERING
卷 51, 期 4, 页码 309-321出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.coastaleng.2004.03.003
关键词
vertical variation in radiation stress; 3-D numerical model; wave-induced current; wave set-up and set-down; surf zone
In this paper, the traditional concept of radiation stress in water waves is extended to its vertical profile in a new technical way. The definition of and calculation formulae for the vertical profile of radiation stress are advanced. The wave-induced currents over a slopping bottom are modeled. In the simulated example, the wave set-up and set-down, and the vertical structure of wave-induced currents inside and outside the surf zone are successfully modeled. The modeled wave set-up and set-down agree well with the analytical results. The model results reveal also two wave-induced vertical circulations with opposite directions; and the flow pattern agrees well with the measurement of a laboratory experiment. The application of radiation stress with vertical variation is expected to play an important role in the studies of near-shore current systems. (C) 2004 Elsevier B.V. All rights reserved.
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