filename     : Pfa12.pdf
entry        : inproceedings
conference   : ACM SIGGRAPH, Los Angeles, USA, 5-9 August 2012
pages        : 112:1--112:8
year         : 2012
month        : jul
title        : Lagrangian Vortex Sheets for Animating Fluids
subtitle     : 
author       : Tobias Pfaff, Nils Thuerey, Markus Gross
booktitle    : 
ISSN/ISBN    : 0730-0301
editor       : 
publisher    : ACM
publ.place   : New York, NY, USA
volume       : 31
issue        : 4
language     : English
keywords     : turbulence, fluid simulation
abstract     : Buoyant turbulent smoke plumes with a sharp smoke-air interface, such as volcanic plumes, are 
notoriously hard to simulate. The surface clearly shows small-scale turbulent structures which are 
costly to resolve. In addition, the turbulence onset is directly visible at the interface, and is
not captured by commonly used turbulence models. 
We present a novel approach that employs a triangle mesh as a high-resolution
surface representation combined with a coarse Eulerian solver.
On the mesh, we solve the interfacial vortex sheet equations, which allows us to accurately simulate
buoyancy induced turbulence. For complex boundary conditions we propose an orthogonal turbulence
model that handles vortices caused by obstacle interaction.
In addition, we demonstrate a re-sampling scheme to remove surfaces that are hidden inside the bulk volume.
In this way we are able to achieve highly detailed simulations of turbulent plumes efficiently.