Real-time smoke simulation with improved turbulence by spatial adaptive vorticity confinement

Publication Type

Journal Article

Publication Date

4-2011

Abstract

Turbulence modeling has recently drawn many attentions in fluid animation to generate small-scale rolling features. Being one of the widely adopted approaches, vorticity confinement method re-injects lost energy dissipation back to the flow. However, previous works suffer from deficiency when large vorticity coefficient ε is used, due to the fact that constant ε is applied all over the simulated domain. In this paper, we propose a novel approach to enhance the visual effect by employing an adaptive vorticity confinement which varies the strength with respect to the helicity instead of a user-defined constant. To further improve fine details in turbulent flows, we are not only applying our proposed vorticity confinement to low-resolution grid, but also on a finer grid to generate sub-grid level turbulence. Since the incompressible Navier-Stokes equations are solved only in low-resolution grid, this saves a significant amount of computation. Several experiments demonstrate that our method can produce realistic smoke animation with enhanced turbulence effects in real-time.

Keywords

Fluid animation, Fluid simulations, Incompressible navier stokes equations, Simulated domains, Smoke simulation, Turbulence effect, Vorticity confinement, Vorticity confinement method

Discipline

Databases and Information Systems

Research Areas

Information Systems and Management

Publication

Computer Animation and Virtual Worlds

Volume

22

Issue

2-3

First Page

107

Last Page

114

ISSN

1546-4261

Identifier

10.1002/cav.408

Publisher

Wiley: 12 months

Additional URL

https://doi.org/10.1002/cav.408

This document is currently not available here.

Share

COinS