Liquid Surface Tracking with Error Compensation

被引:29
作者
Bojsen-Hansen, Morten [1 ]
Wojtan, Chris [1 ]
机构
[1] IST Austria, Klosterneuburg, Austria
来源
ACM TRANSACTIONS ON GRAPHICS | 2013年 / 32卷 / 04期
关键词
liquid simulation; surface tracking; surface fairing; vortex sheets; level set method; triangle mesh; WATER; DENSITY; SMOKE;
D O I
10.1145/2461912.2461991
中图分类号
TP31 [计算机软件];
学科分类号
081202 ; 0835 ;
摘要
Our work concerns the combination of an Eulerian liquid simulation with a high-resolution surface tracker (e.g. the level set method or a Lagrangian triangle mesh). The naive application of a high-resolution surface tracker to a low-resolution velocity field can produce many visually disturbing physical and topological artifacts that limit their use in practice. We address these problems by defining an error function which compares the current state of the surface tracker to the set of physically valid surface states. By reducing this error with a gradient descent technique, we introduce a novel physics-based surface fairing method. Similarly, by treating this error function as a potential energy, we derive a new surface correction force that mimics the vortex sheet equations. We demonstrate our results with both level set and mesh-based surface trackers.
引用
收藏
页数:10
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