Small Scale Details and Improved Surface Reconstruction for Sph

We present a novel method for creating small scale details as splashes and foam for Smoothed Particle Hydrodynamics (SPH) simulations. In our technique, each fluid particle can become a source emitter of splash particles. The probability of emission is controlled by density decay and velocity of fluid particles. Splash particles are uncoupled, collide only with obstacles and follow only ballistic motion. We have improved fluid surface reconstruction techniques [Zhu and Bridson 2005; Solenthaler et al. 2007] to better handle uneven distributions of particles. Our method first computes density distribution of particles which is then used for weighting the particle average similarly to previous methods. We also propose a different approach to reduce artifacts within isolated particles, without the need of eigen analysis, giving us a clean analytic expression of surface normals. Mathematics Subject Classification 2000: I.3.5, I.3.7 Additional