A Study on the Numerical Model of Wave Induced Current around Nearshore Structure

J. Ocean Eng. Technol. 1991;5(1):55-63.

연안역 구조물 주위에서의 해빈류의 수치해석에 관한 연구

민병형,이상화,김인철

동아대학교 토목공학과,동아대학교 토목공학과,동아대학교 토목공학과

Keywords: Wave Induced Current, Radiation Stress, Driving Force, Finite Difference Method, Convective Term

핵심용어: 해빈류, 라디에이션 응력, 기류력, 유한 차분법, 이송항

Abstract

This study is to predict accurately the wave induced current accuring by the radiation stress which acts as the driving force around Nearshore structure. For the wave induced current, the depth integrated and time averaged governing equation of an unsteady nonlinear form is derived from the continuity and momentum equation of an incompressible fluid. Numerical solutions are obtained by a finite difference method for the governing equation. In the vicinity of a structure, computed flow patterns show good agreement with the hydraulic experimental data. The numerical results obtained by neglecting the convective term show a large change of alongshore and offshore current.