On Long Wave Induced by a Sub-sea Landslide Using a 2D Numerical Wave Tank |
Koo Weon-Cheol,Kim Moo-Hyun |
Dept. of Civil Engineering Texas A&M University College Station,Dept. of Civil Engineering Texas A&M University College Station |
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© 2007 The Korean Society of Ocean Engineers
Open access / Under a Creative Commons License
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Keywords:
Landslide, Tsunami, Boundary element, Run-up, Fully nonlinear, Numerical wave tank, Wave characteristics |
Abstract |
A long wave induced by a Gaussian-shape submarine landslide is simulated by a 2D fully nonlinear numerical wave tank (NWT). The NWT is based on the boundary element method and the mixed Eulerian/Lagrangian approach. Using the NWT, physical characteristics of land-slide tsunami, including wave generation, propagation, particle kinematics, hydrodynamic pressure, run-up and depression, are simulated for the early stage of long wave generation and propagation. Various sliding mass heights are applied to the developed model for a systematic sensitivity analysis. In particular, the fully nonlinear NWT results are compared with linear results (exact body-boundary conditions with linear free-surface conditions) to identify the nonlinear effects in the respective cases. |
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