Journal of Coastal Disaster Prevention 2014;1(1):1-9.
Published online January 30, 2014.
A Numerical Study on Tsunami Run-up Heights on Impermeable/Permeable Slope
Woo-Dong Lee, Dong-Soo Hur, Nam-Heon Goo
투과성 및 불투과성 경사면 상에서 지진해일의 처오름 높이에 관한 수치적 검토
이우동, 허동수, 구남헌
In order to examine the characteristics of tsunami run-up heights on impermeable/permeable slope, a numerical wave tank by upgrading LES-WASS-3D was used in this study. Then, the model were compared with existing hydraulic model test for its verification. The numerical results well reproduced experimental results of solitary wave deformation, propagation and run-up height under various conditions. Also, the numerical simulation with a slope boundary condition has been carried out to understand solitary wave run-up on impermeable/permeable slope. It is shown that the run-up heights on permeable slope is 52.64-63.2% smaller than those on the impermeable slope because of wave energy dissipation inside the porous media. In addition, it is revealed that the numerical results with slope boundary condition agreed well with experimental results in comparison with the results by using stair type boundary condition
Key Words: LES-WASS-3D; Solitary wave; Run-up height; Sloping boundary condition; Wave generation system

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