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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Three-dimensional modelling of tsunami waves with rigid vegetation
Three-dimensional modelling of tsunami waves with rigid vegetation
Author : MARIA MAZA(1), JAVIER L. LARA(2) & INIGO J. LOSADA(3)
ABSTRACT
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 : 1,330,534 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 18/08/2015
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