IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 2: Coastal Hydraulics: Form and Function : Investigation of tsunami wave runup over vegetated slopes
Investigation of tsunami wave runup over vegetated slopes
Author : Chen Haoliang, Chan Eng Soon, Lin Pengzhi
This paper presents an investigation of the vegetation effect on coastal wave propagation and tsunami wave runup process using both experimental method and numerical modeling. In experiments, the vegetation is represented by solid mental rods. The bulk drag force coefficient and inertial force coefficient are obtained through the measured wave forces on the rods and the velocity information. The calculated coefficients are used in the numerical model to simulate the wave deformation within vegetated region. This numerical model adopts the concepts of Volume of Fluid to capture the free surface evolution and two-step projection method to solve the volume averaged RANS equations. The computed wave height distribution along the vegetation region agrees quite well with the experimental data. The numerical results of tsunami wave runup over vegetated slope improve our understanding on the vegetation effect to reduce the tsunami impact on coastal environment and human livings through an ecological approach.
File Size : 381,359 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 2: Coastal Hydraulics: Form and Function
Date Published : 01/07/2011
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