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This paper deals with the applicability of the computational method to predict fluid forces acting on complicated-shaped solid objects included in free-surface flows. The computational method, MICS, predicts the fluid forces from the pressure and viscous terms of the incompressible multiphase fields. A solid object is represented by multiple tetrahedron elements and their volume fraction included in a fluid computational cell is estimated with a sub-cell method. The predicted results were compared with the measured fluid forces acting on a wave breaking block placed in free-surface flows. The validity of the computational method was shown through the quantitative comparison with the experimental results.

NUMERICAL PREDICTION FOR FLUID FORCES ACTING ON 3D COMPLICATED-SHAPED OBJECTS IN FREE-SURFACE FLOWS