Experimental Measurements of Solitary Wave Attenuation Over Shallow and Intermediate Submerged Canopy  

作　　者：王千 郭晓宇 王本龙 房詠柳 刘桦 

机构地区：[1]Department of Engineering Mechanics, Shanghai Jiao Tong University [2]MOE Key Laboratory of Hydrodynamics, Shanghai Jiao Tong University

出　　处：《China Ocean Engineering》2016年第3期375-392,共18页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51379123 and 11202129);the State Key Laboratory of Ocean Engineering(Shanghai Jiao Tong University)(Grant No.GKZD010067)

摘　　要：Attenuations of solitary wave over a patch of submerged canopy are experimentally investigated. The submerged canopy is modeled by a group of circular cylinder array. The decay coefficients of different wave heights in two water depths along the wave flume are measured for six canopy models, including two canopy heights and three styles of arrangements. The relationships among the decay coefficient, and the dimensionless wave height, submergence ratio, relative height and arrangement of the canopy are experimentally studied. 2D PIV technique is employed to measure the representative flow field inside the canopy. A four-deck flow structure is proposed for wave flow field over shallow submerged canopy. The characteristics of shear flow inside the aligned canopy region are discussed.Attenuations of solitary wave over a patch of submerged canopy are experimentally investigated. The submerged canopy is modeled by a group of circular cylinder array. The decay coefficients of different wave heights in two water depths along the wave flume are measured for six canopy models, including two canopy heights and three styles of arrangements. The relationships among the decay coefficient, and the dimensionless wave height, submergence ratio, relative height and arrangement of the canopy are experimentally studied. 2D PIV technique is employed to measure the representative flow field inside the canopy. A four-deck flow structure is proposed for wave flow field over shallow submerged canopy. The characteristics of shear flow inside the aligned canopy region are discussed.

关 键 词：Solitary waves submerged canopy rigid cylinders decay coefficient PIV 

分 类 号：P731.2[天文地球—海洋科学]