Abstract
A number of studies which handle wave height attenuation effect due to coastal vegetation such as mangroves and coastal forests have been performed. In recent years, for considering effect of the mangrove roots, actual trees have been used for laboratory test. Chang (2019) proposed a formula for calculating C_D and C_M from Re and KC through experiments using a mangrove 3D model printed using actual tree. The C_D and C_M have been estimated experimentally under the condition that the water depth is relatively large and the waves don't break. However, the relationship between the Re number and the KC number and the C_D and C_M have not been investigated. Therefore, we conducted experiments focusing on the arrangement and density of the forest zone and trunk thickness. Then we demonstrated the validity of our analysis based on the comparison of our result and results of previous studies. The aim of this study is to establish a modeling method for coastal vegetation in order to enable calculation of the wave attenuation effect due to mangroves using numerical calculation.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/bcNlvRSvJQk
Highlights
A number of studies which handle wave height attenuation effect due to coastal vegetation such as mangroves and coastal forests have been performed
For considering effect of the mangrove roots, actual trees have been used for laboratory test
When the shape of water surface was changed due to breaking waves, the calculation result is strongly affected by the grid size and the difference scheme
Summary
A number of studies which handle wave height attenuation effect due to coastal vegetation such as mangroves and coastal forests have been performed. For considering effect of the mangrove roots, actual trees have been used for laboratory test. Chang (2019) proposed a formula for calculating CD and CM from Re and KC through experiments using a mangrove 3D model printed using actual tree. We conducted experiments focusing on the arrangement and density of the forest zone and trunk thickness. We demonstrated the validity of our analysis based on the comparison of our result and results of previous studies. The aim of this study is to establish a modeling method for coastal vegetation in order to enable calculation of the wave attenuation effect due to mangroves using numerical calculation
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