An Improved Solid Boundary Treatment for Wave-Float Interactions Using ISPH Method

摘要

The Smoothed Particle Hydrodynamics (SPH) method has proved to have greatudpotentials in dealing with the wave-structure interactions. Compared with the WeaklyudCompressible SPH (WCSPH) method, the ISPH approach solves the pressure byudusing the pressure Poisson equation rather than the equation of state. This couldudprovide a more stable and accurate pressure field that is important in the study ofudwave-structure interactions. This paper improves the solid boundary treatment ofudISPH by using a high accuracy Simplified Finite Difference Interpolation (SFDI)udscheme for the 2D wave-structure coupling problems, especially for free-movingudstructure. The proposed method is referred as the ISPH_BS. The model improvementudis demonstrated by the documented benchmark tests and laboratory experimentudcovering various wave-structure interaction applications.