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In recent years, CFD (Computational Fluid Dynamics) has been actively employed in order to predict complicated hydraulic phenomena and solve practical problems in coastal engineering, in accordance with the developments of computer performance and high-order numerical schemes. The purpose of this study is to efficiently compute wave deformation and wave overtopping around a revetment on a reef in Okinawa Main Island making use of two different numerical models, namely a depth-averaged numerical model based on a Boussinesq equation "NOWT-PARI" and a vertical two-dimensional numerical wave flume based on a VOF method "CADMAS-SURF". The numerical results show that NOWT-PARI is capable of simulating wave deformations including wave reflection, refraction and diffraction appropriately. The CADMAS-SURF is confirmed to be able to compute wave overtopping phenomena around the revetment more precisely by setting proper incident wave conditions and bottom topography based on the numerical results by "NOWT-PARI" with due consideration of wave direction.

kaiyou kaihatsu rombunshuu/kaiyō kaihatsu rombunshū

ATTEMPT AT EFFECTIVE UTILIZATION OF HORIZONTAL AND VERTICAL TWO-DIMENSIONAL NUMERICAL MODELS FOR RESISTIVE DESIGN OF COASTAL REVETMENT AGAINST WAVE ACTION