An Efficient Sleepy Algorithm for Particle-Based Fluids

Abstract EN

We present a novel Smoothed Particle Hydrodynamics (SPH) based algorithm for efficiently simulating compressible and weakly compressible particle fluids.

Prior particle-based methods simulate all fluid particles; however, in many cases some particles appearing to be at rest can be safely ignored without notably affecting the fluid flow behavior.

To identify these particles, a novel sleepy strategy is introduced.

By utilizing this strategy, only a portion of the fluid particles requires computational resources; thus an obvious performance gain can be achieved.

In addition, in order to resolve unphysical clumping issue due to tensile instability in SPH based methods, a new artificial repulsive force is provided.

We demonstrate that our approach can be easily integrated with existing SPH based methods to improve the efficiency without sacrificing visual quality.