Optimization-based Fluid Simulation on Unstructured Meshes
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Date
2010
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We present a novel approach to fluid simulation, allowing us to take into account the surface energy in a precise manner. This new approach combines a novel, topology-adaptive approach to deformable interface tracking, called the deformable simplicial complexes method (DSC) with an optimization-based, linear finite element method for solving the incompressible Euler equations. The deformable simplicial complexes track the surface of the fluid: the fluid-air interface is represented explicitly as a piecewise linear surface which is a subset of tetrahedralization of the space, such that the interface can be also represented implicitly as a set of faces separating tetrahedra marked as inside from the ones marked as outside. This representation introduces insignificant and controllable numerical diffusion, allows robust topological adaptivity and provides both a volumetric finite element mesh for solving the fluid dynamics equations as well as direct access to the interface geometry data, making inclusion of a new surface energy term feasible. Furthermore, using an unstructured mesh makes it straightforward to handle curved solid boundaries and gives us a possibility to explore several fluid-solid interaction scenarios.
Description
@inproceedings{10.2312:PE/vriphys/vriphys10/011-020,
booktitle = {Workshop in Virtual Reality Interactions and Physical Simulation "VRIPHYS" (2010)},
editor = {Kenny Erleben and Jan Bender and Matthias Teschner},
title = {{Optimization-based Fluid Simulation on Unstructured Meshes}},
author = {Misztal, Marek Krzysztof and Bridson, Robert and Erleben, Kenny and Bærentzen, Jakob Andreas and Anton, François},
year = {2010},
publisher = {The Eurographics Association},
ISBN = {978-3-905673-78-4},
DOI = {10.2312/PE/vriphys/vriphys10/011-020}
}