Reducing numerical dissipation in smoke simulation

Zhanpeng Huang, Ladislav Kavan, Weikai Li, Pan Hui, Guanghong Gong
2015 Graphical Models  
Numerical dissipation acts as artificial viscosity to make smoke viscous. Reducing numerical dissipation is able to recover visual details smeared out by the numerical dissipation. Great efforts have been devoted to suppress the numerical dissipation in smoke simulation in the past few years. In this paper we investigate methods of combating the numerical dissipation. We describe visual consequences of the numerical dissipation and explore sources that introduce the numerical dissipation into
more » ... urse of smoke simulation. Methods are investigated from various aspects including grid variation, high-order advection, subgrid compensation, invariant conservation, and particle-based improvement, followed by discussion and comparison in terms of visual quality, computational overhead, ease of implementation, adaptivity, and scalability, which leads to their different applicability to various application scenarios.
doi:10.1016/j.gmod.2014.12.002 fatcat:tyd5pbuw5rfklpqedqrtzwtx5u