Abstract
A numerical simulation model for storm surge inundation has been developed. Inundation simulation method induced by transition process from overtopping to overflow is incorporated into this model. Convenient estimation method for this transition process is based on the equations produced by Goda(1975a). Several parameters in the Goda's equations are revaluated by numerical wave simulations of the transition process from overtopping to overflow. These simulations are performed by using VOF method (CADMAS-SURF). According to these simulation results accurate flow rates over the coastal dikes are estimated at the time of storm surge. With this simulation model high storm surges generated by large typhoons around the coasts of Japan can be reproduced. This paper presents the outline of the simulation model for storm surge inundation.
