Implementing vegetation-induced wave attenuation in FUNWAVE-TVD model
ZHAO Hongping
WU Yi
TIAN Peng
WU Guoxiang
LIANG Bingchen
Abstract：Coastal ecosystems such as salt marshes and mangroves can effectively dissipate wave energy and reduce the risk of coastal disasters caused by waves.Accurate prediction of wave attenuation caused by vegetation is of significant importance for the design of nature-based coastal protection engineering.This study is based on the open-source fully nonlinear Boussinesq equation model FUNWAVE-TVD,incorporating the momentum dissipation term caused by vegetation to simulate wave attenuation by vegetation.The model uses results from 6 different physical model experiments and 113 sets of experi-mental data for simulation and validation,and determines the optimal vegetation drag coefficient CD.The results show that the model can accurately quantify the attenuation of wave height by vegetation,and that the optimal vegetation drag coefficient CD varies greatly under different experimental condi-tions.The calibrated drag coefficients are compared with several mainstream empirical formulas for vegetation drag coefficients in the literature,and the effective calculation method of CD in numerical simulation of vegetation wave attenuation is discussed.The study can provide technical support for the synergy of coastal disaster protection and ecological restoration.
Keywords：coastal protectionwave attenuationBoussinesq equationvegetation drag coefficient CD
Publication Date：2025-06-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 19-26 )