Variation Characteristics of Irregular Wave Fields around 2-Dimensional Low-Crested-Breakwater

摘要

This study evaluates the variation characteristics of irregular wave fields for two-dimensional Low-Crested Structure (LCS) by olaFlow model based on the two-phases flow by numerical analysis.The numerical results of olaFlow model are verified by comparing irregular wave profile of target wave spectrum and measured one,and their spectra.In addition,spacial variation of irregular wave spectrum,wave transmission ratio,rootmean square wave height,time-averaged velocity and time-averaged turbulent kinetic energy by two-dimensional LCS are discussed numerically.The time-averaged velocity,one of the most important numerical results is formed counterclockwise circulating cell and clockwise nearshore current on the front of LCS,and strong uni-directional flow directing onshore side around still water level.