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A simple free-surface particle detection method for two and three-dimensionalSPH simulation has been implemented. The method uses sphere representation forthe SPH particle. The fluid domain is covered by overlapping spheres. A spherewhose surface is not fully covered considered as boundary. To test particleboundary status, we used a sum of normalized relative position vectors fromneighbouring particles to the test particle. By checking the existence of un-covered sphere surface by this vector sum, boundary status of the test particlecan be determined. This boundary detection method can be easily embedded in theSPH solver algorithm.

Simple free-surface detection in two and three-dimensional SPH solver