Simulation Method for Water and Cloth Interaction Phenomena based on LGA

Abstract

Interactive simulations of water and cloth have important applications in many fields. However, because of the high time and space complexity of water–cloth interaction simulations, current simulation methods cannot meet the requirements of being both real time and realistic. In this paper, lattice gas automata (LGA)-based simulation method for water diffusion in cloth is proposed. In the proposed method, a three-dimensional mass–spring cloth model is constructed to simulate cloth with an arbitrary thickness and the geometric structure of the cloth is unified via the LGA lattice structure. The diffusion process of water in cloth is simplified as the movement process of water particles in the lattice structure, and the diffusion direction of the water is determined by the differences in the vertex saturation. The advantage of this method is that the physical parameters of the cloth are integrated into the diffusion equation via the three-dimensional model of the cloth and the saturation of the vertices. The D3Q27 diffusion model is used to simplify the complexity of the water particle diffusion algorithm, and the applicability of the algorithm to different types of cloths is improved. By experimenting with this method and comparing our results with those of other methods, it is found that the proposed method can effectively improve the simulation speed and realism and can realistically simulate the effects of wetting diffusion, water deformation, seepage dripping and cloth folding when the water and cloth interact.