Improved Variational Guiding of Smoke Animations

Smoke animations are hard to art-direct because simple changes in parameters such as simulation resolution often lead to unpredictable changes in the final result. Previous work has addressed this problem with a guiding approach which couples low-resolution simulations – that exhibit the desired flow and behaviour – to the final, high-resolution simulation. This is done in such a way that the desired low frequency features are to some extent preserved in the high-resolution simulation. However, the steady (i.e. constant) guiding used often leads to a lack of sufficiently high detail, and employing time-dependent guiding is expensive because the matrix of the resulting set of equations needs to be recomputed at every iteration. We propose an improved mathematical model for Eulerianbased simulations which is better suited for dynamic, time-dependent guiding of smoke animations through a novel variational coupling of the low- and high-resolution simulations. Our model results in ...

• Type: Conference
• Year: 2010
• Where: EUROGRAPHICS
• Authors: Michael B. Nielsen and Brian B. Christensen
• Keywords: Computer Graphics, EUROGRAPHICS 2010, Low Resolution Simulation, Time-dependent Guiding, Time-dependent Guiding Allows