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 : 36th Congress - The Hague (2015) FULL PAPERS : THEME 4- WATER ENGINEERING : THREE-DIMENSIONAL MODELLING OF TSUNAMI WAVES WITH RIGID VEGETATION
THREE-DIMENSIONAL MODELLING OF TSUNAMI WAVES WITH RIGID VEGETATION
Author : MARIA MAZA , JAVIER L. LARA & INIGO J. LOSADA
This study presents a three-dimensional CFD numerical analysis of the interaction of tsunami waves with mangrove forest. The IHFOAM model is used to determine tsunami wave damping by rigid vegetation and wave-exerted forces in the vegetation field. Tsunami waves are reproduced considering solitary waves. The mangrove forest is represented using emergent rigid cylinders. The study presents a first approach that considers the exact geometry of the cylinders field in the model. The second approach is based on a macroscopic modeling of the flow within the cylinders field considering a drag force to model the momentum damping. The model is validated using laboratory data. The ability and the suitability of the use of both approaches are discussed showing their capacity in determining the wave height evolution along the field and the forces exerted in the cylinders. The first approach allows the study of flow characteristics around each individual cylinder. It is applied in order to study the influence of the cylinder?s spatial distribution in wave damping and in wave-exerted forces. This analysis reveals the importance of considering realistic distributions when evaluating wave exerted-forces.
File Size : 1,377,110 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 4- WATER ENGINEERING
Date Published : 19/04/2016
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