A Controllable Spring Force Based Method for Fluid Surface Disturbance Details Simulation

Particle based simulations are widely used in computer graphics. However, few methods use active control for fluid surface. Thus we present a new controllable method based on the spring force model, which provides active control for the disturbance of the fluid surface. This method modifies the spatial distribution of the particles to generate disturbance. To make it controllable, we design a disturbance equation, using the relationship between the macrostate of fluid and the microscopic particles in the Boltzmann’s Entropic Equation. Moreover, we also propose multiple optimizations in order to improve appearance of fluid surface. The correction of fluid splash first detects the target particles by a hybrid method, then adjusts the spring force that acts on these particles. The spring force attenuation model uses a sigmoid function to represent the attenuation of particles at different depths. Experimental results show that our method generates the expected disturbance details. The optimizations enhance the realism of the disturbance simulation.