NUMERICAL SIMULATION OF SEDIMENT TRANSPORT AND BOTTOM TOPOGRAPHY CHANGE DUE TO TSUNAMI WITH LARGE SCALE EDDY

Abstract

 Numerical simulations were carried out in order to analyze sediment transport and bottom topography change due to tsunami with large-scale eddy. This study, in particular, discussed the influence of shoreline condition and sand diameter on flow pattern, sediment transport and bottom topography change. The numerical results revealed that shoreline condition has a strong influence on large-scale eddy and sediment transport. Sensitivity analysis result also indicated that bottom topography change is sensitive to Manning's roughness coefficient in sediment transport simulation.