Real‐time Animation of Sand‐Water Interaction
Witawat Rungjiratananon, Zoltan Szego, Yoshihiro Kanamori, Tomoyuki Nishita · Computer Graphics Forum · 2008
Abstract Recent advances in physically‐based simulations have made it possible to generate realistic animations. However, in the case of solid‐fluid coupling, wetting effects have rarely been noticed despite their visual importance especially in interactions between fluids and granular materials. This paper presents a simple particle‐based method to model the physical mechanism of wetness propagating through granular materials; Fluid particles are absorbed in the spaces between the granular particles and these wetted granular particles then stick together due toliquid bridgesthat are caused by surface tension and which will subsequently disappear when over‐wetting occurs. Our method can handle these phenomena by introducing awetness valuefor each granular particle and by integrating those aspects of behavior that are dependent on wetness into the simulation framework. Using this method, a GPU‐based simulator can achieve highly dynamic animations that include wetting effects in real time.