Synthetic Controllable Turbulence Using Robust Second Vorticity Confinement
Article first published online: 4 OCT 2012
© 2012 The Authors Computer Graphics Forum © 2012 The Eurographics Association and Blackwell Publishing Ltd.
Computer Graphics Forum
Volume 32, Issue 1, pages 27–35, February 2013
How to Cite
He, S. and Lau, R. W. H. (2013), Synthetic Controllable Turbulence Using Robust Second Vorticity Confinement. Computer Graphics Forum, 32: 27–35. doi: 10.1111/j.1467-8659.2012.03228.x
- Issue published online: 21 FEB 2013
- Article first published online: 4 OCT 2012
- smoke simulation;
- vorticity confinement;
- physically-based modeling
- I.3.7 [Computer Graphics];
- Three-Dimensional Graphics and Realism-Animation I.6.8 [Simulation and Modelling];
- Types of Simulation-Animation
Capturing fine details of turbulence on a coarse grid is one of the main tasks in real-time fluid simulation. Existing methods for doing this have various limitations. In this paper, we propose a new turbulence method that uses a refined second vorticity confinement method, referred to as robust second vorticity confinement, and a synthesis scheme to create highly turbulent effects from coarse grid. The new technique is sufficiently stable to efficiently produce highly turbulent flows, while allowing intuitive control of vortical structures. Second vorticity confinement captures and defines the vortical features of turbulence on a coarse grid. However, due to the stability problem, it cannot be used to produce highly turbulent flows. In this work, we propose a robust formulation to improve the stability problem by making the positive diffusion term to vary with helicity adaptively. In addition, we also employ our new method to procedurally synthesize the high-resolution flow fields. As shown in our results, this approach produces stable high-resolution turbulence very efficiently.