Olivier Mercier

Research Scientist - Display Systems Research
Facebook Reality Labs

oli.mercier@gmail.com
Local Bases for Model-reduced Smoke Simulations
Eurographics 2020
Olivier Mercier
Université de Montréal
Derek Nowrouzezahrai
McGill University
Abstract
We present a flexible model reduction method for simulating incompressible fluids. We derive a novel vector field basis composed of localized basis flows which have simple analytic forms and can be tiled on regular lattices, avoiding the use of complicated data structures or neighborhood queries. Local basis flow interactions can be precomputed and reused to simulate fluid dynamics on any simulation domain without additional overhead. We introduce heuristic simulation dynamics tailored to our basis and derived from a projection of the Navier-Stokes equations to produce physically plausible motion, exposing intuitive parameters to control energy distribution across scales. Our basis can adapt to curved simulation boundaries, can be coupled with dynamic obstacles, and offers simple adjustable trade-offs between speed and visual resolution.
Media
Video
Talk
Q&A
Bibtex
@inproceedings{mercier2020local,
  title={Local Bases for Model-reduced Smoke Simulations},
  author={Mercier, Olivier and Nowrouzezahrai, Derek},
  booktitle={Computer Graphics Forum},
  volume={39},
  number={2},
  pages={9--22},
  year={2020},
  organization={Wiley Online Library}
}