Simulating colliding flows in smoothed particle hydrodynamics with fractional derivatives

Abstract

We propose a new method based on the use of fractional differentiation for improving the efficiency and realism of simulations based on smoothed particle hydrodynamics (SPH). SPH represents a popular particle‐based approach for fluid simulation and a high number of particles is typically needed for achieving high quality results. However, as the number of simulated particles increase, the speed of computation degrades accordingly. The proposed method employs fractional differentiation to improve the results obtained with SPH in a given resolution. The approach is based on the observation that effects requiring a high number of particles are most often produced from colliding flows, and therefore, when the modeling of this behavior is improved, higher quality results can be achieved without changing the number of particles being simulated. Our method can be employed to reduce the resolution without significant loss of quality, or to improve the quality of the simulation in the current chosen resolution. The advantages of our method are demonstrated with several quantitative evaluations. Copyright © 2013 John Wiley & Sons, Ltd.

Interactive fluid flow simulation in computer graphics using incompressible smoothed particle hydrodynamics

“…Recent trends toward developing efficient and robust techniques to simulate and visualize detailed fluids interactively are based on numerical methods, through solving mathematical equations or models that describe the motion of fluids . Many mathematical and programming models are proposed to describe appeared complex phenomena in the interaction of fluids with the environment to generate visually realistic fluid image .…”