A CIP-Based Numerical Simulation of Free Surface Flow Related to Freak Waves

An enhanced numerical model for simulating two-dimensional incompressible viscous flow with distorted free surface is reported.The numerical simulation is carried out through the CIP(Constrained Interpolation Profile)-based method,which is described in the paper.A more accurate interface capturing scheme,the VOF/WLIC scheme(VOF:Volume-of-Fluid;WLIC:weighed line interface calculation),is adopted as the interface capturing method.To assess the developed algorithm and its versatility,a selection of test problems are examined,i.e.the square wave propagation,the Zalesak’s rigid body rotation,dam breaking problem with and without obstacles,wave sloshing in an excited wave tank and interaction between extreme waves and a floating body.Excellent agreements are obtained when numerical results are compared with available analytical,experimental,and other numerical results.These examples demonstrate that the use of the VOF/WLIC scheme in the free surface capturing makes better results and also the proposed CIP-based model is capable of predicting the freak wave-related phenomena.