High Effective Simulation of Solid-Fluid Coupling for Complex Scenes

Efficient simulation techniques of large-scale complex solid-fluid coupling scenes have been found widely applications in the areas such as disaster simulation,virtual reality and film and TV special effect manufacture,etc.However,current physical based fluid simulation algorithms can only simulate small scale scenes and fail to effectively simulate the solid fracture effect in large-scale complex solid-fluid coupling scenes.To overcome this defect,in this paper we proposed an efficient solid-fluid method for complex scenes to improve.First,we presented a new calculation framework which combines divergence free smoothed particle hydrodynamics(DFSPH)method and fluid implicit particle(FLIP)method,which fully utilizes the advantage of fine grained implicit particles to add the dynamic details of fluid scenes.This improved the realism of simulated scenes while keeping the physical attributes of fluid.Then,we hired a multi-dimension divide-and-recombine solid-fluid coupling calculation framework to further enhance solid-fluid coupling efficiency.To realize the solid fracture effect under fluid lashing,a physical and geometrical hybrid method was used:Strain energy density model in fracture mechanics was hired to determine fragment distribution during solid fracture process,while geometrical based centroid Voronoi diagram method was hired to rapidly generate fragments.Finally,large-scale complex solid-fluid coupling scenes with millions of parwith millions of particles participating in are successfully simulated interactively,including the efficient simulation of solid fracture effect under lashing of high speed fluid.