A Study on the Numerical Models of Wave induced Currents

J. Ocean Eng. Technol. 1998;12(3):75-85.

Lee, Jung-Maan;Kim, Jae-Joong;Park, Jung-Chul;

파랑에 의한 연안류의 수치모델에 관한 연구

이정만;김재중;박정철;

동아대 대학원;동아대;동아대 대학원;

Keywords: Wave Induced Current, Wave-Current interaction, Radiation stress

핵심용어: 해빈류, 피와 흐름의 상호작용, 잉여응력

Abstract

A finite difference model for predicting time-dependent, wave-induced nearshore current is studied. The model includes wave refraction, wave-current interaction, bottom friction and wind effect. This model iteratively solved the linear the linear set of conservation of both mass and momentum, which were time averaged (over one wave period) and depth integrated, for mean velocities and free surface displacement. Numerical simulations of nearshore current under oblique wave attack, and for wave and wind induced current on a longshore periodic beach are carried out. Longshore velocities tend to zero in some distances outside the breaker line. And the peak velocity is shifted shoreward at the breaker line. The results represent the general characteristics of the nearshore current induced by wave.