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| Authors: | Daniel Kallin: Sweden |
| Publication title: | Real Time Large Scale Fluids for Games |
| Conference: | SIGRAD 2008. The Annual SIGRAD Conference Special Theme: Interaction, November 27–28, 2008 Stockholm, Sweden |
| Publication type: | Abstract and Fulltext |
| Issue: | 034 |
| Article No.: | 010 |
| Abstract: | This paper presents an implementation of a stable height-field fluid solver on non-uniform quadtree grids. Smoothing kernel interpolation allow one to use semi-Lagrangian advection on the nonuniform grid. A modification to the advection make it mass conserving. The non-uniform grid allow the model to run on a very tight cell budget with high frame rates even for arbitrary sized environments. Gravity acceleration is implemented as a modified explicit Euler step with upwind differencing. The differencing is based on a definition of a node neighbour which doesnt require the neighbor to be a quadtree leaf. This solves the problems of hanging nodes inherent with quadtrees. This model is suitable for water propagating over height field terrains in interactive environments like video games. |
| Language: | English |
| Keywords: | Fluid dynamics, semi-Lagrangian advection, upwind differencing, adaptive grid, quadtree |
| Year: | 2008 |
| No. of pages: | 8 |
| Pages: | 31-38 |
| Series: | Linköping Electronic Conference Proceedings |
| ISSN (print): | 1650-3686 |
| ISSN (online): | 1650-3740 |
| File: | http://www.ep.liu.se/ecp/034/010/ecp083410.pdf |
| Available: | 2008-11-27 |
| Publisher: | Linköping University Electronic Press, Linköpings universitet |
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