Extended virtual pipes for the stable and real-time simulation of small-scale shallow water
| Autor: | David Mould, Sébastien Delorme, Alexander Hay, François Dagenais, Eric Paquette, Julián E. Guzmán, Valentin Vervondel |
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| Rok vydání: | 2018 |
| Předmět: |
Scale (ratio)
Computer science Linear system General Engineering 020207 software engineering Terrain 02 engineering and technology Mechanics Computer Graphics and Computer-Aided Design Physics::Fluid Dynamics Human-Computer Interaction Real-time simulation Viscosity (programming) Triangle mesh 0202 electrical engineering electronic engineering information engineering Heightmap 020201 artificial intelligence & image processing Distance transform ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | Computers & Graphics. 76:84-95 |
| ISSN: | 0097-8493 |
| Popis: | We propose an approach for real-time shallow water simulation, building upon the virtual pipes model with multi-layered heightmaps. Our approach introduces the use of extended pipes that are capable of resolving flows through fully flooded passages, which is not possible using current multi-layered techniques. We extend the virtual pipe method with a physically-based viscosity model that is both fast and stable. Our viscosity model is integrated implicitly without the expense of solving a large linear system. Despite the few simplifications necessary to achieve a real-time viscosity model, we show that our new viscosity model produces results that match the behavior of an offline fluid-implicit particle (FLIP) simulation for various viscosity values. The liquid is rendered as a triangular mesh surface built from a heightmap. We propose a novel surface optimization approach that prevents interpenetrations of the liquid surface with the underlying terrain geometry. To improve the realism of small-scale scenarios, we present a meniscus shading approach with a view-dependent adjustment of the liquid surface normals based on a distance field. Our implementation runs in real time on various scenarios of roughly 10 × 10 cm at a resolution of 0.5 mm, with up to five layers. |
| Databáze: | OpenAIRE |
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