Numerical investigation of solitary wave run-up attenuation by patchy vegetation  

作　　者：Chuyan Zhao Yan Zhang Jun Tang Yongming Shen 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China [2]Institute of Environmental and Ecological Engineering,Guangdong University of Technology,Guangzhou 510006,China

出　　处：《Acta Oceanologica Sinica》2020年第5期105-114,共10页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract Nos 51579036 and 51779039;the Fundamental Research Funds for the Central Universities of China under contract No.DUT19LAB13。

摘　　要：Coastal vegetation is capable of decreasing wave run-up.However,because of regrowth,decay or man-made damage,coastal vegetation is always distributed in patches,and its internal distribution is often non-uniform.This study investigates the effects of patchy vegetation on solitary wave run-up by using a numerical simulation.A numerical model based on fully nonlinear Boussinesq equations is established to simulate the wave propagation on a slope with patchy vegetation.By using the model,the process of solitary wave run-up attenuation due to patchy vegetation is numerically analysed.The numerical results reveal that patchy vegetation can considerably attenuate the wave run-up in an effective manner.In addition,high-density patched vegetation can attenuate the solitary wave run-up more effectively than low-density patched vegetation can.For the same density,patchy vegetation with a uniform distribution has a better attenuation effect on wave run-up compared to that of patchy vegetation with a non-uniform distribution.

关 键 词：solitary wave RUN-UP patchy vegetation Boussinesq equation 

分 类 号：P731.25[天文地球—海洋科学]