NDLI: Real-time Eulerian water simulation using a restricted tall cell grid

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Real-time Eulerian water simulation using a restricted tall cell grid

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Real-time Eulerian water simulation using a restricted tall cell grid

Content Provider	ACM Digital Library
Author	Müller, Matthias Chentanez, Nuttapong
Abstract	We present a new Eulerian fluid simulation method, which allows real-time simulations of large scale three dimensional liquids. Such scenarios have hitherto been restricted to the domain of off-line computation. To reduce computation time we use a hybrid grid representation composed of regular cubic cells on top of a layer of tall cells. With this layout water above an arbitrary terrain can be represented without consuming an excessive amount of memory and compute power, while focusing effort on the area near the surface where it most matters. Additionally, we optimized the grid representation for a GPU implementation of the fluid solver. To further accelerate the simulation, we introduce a specialized multi-grid algorithm for solving the Poisson equation and propose solver modifications to keep the simulation stable for large time steps. We demonstrate the efficiency of our approach in several real-world scenarios, all running above 30 frames per second on a modern GPU. Some scenes include additional features such as two-way rigid body coupling as well as particle representations of sub-grid detail.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF MP4
ISBN	9781450309431
DOI	10.1145/1964921.1964977
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2011-08-07
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Multigrid Tall cell grid Fluid simulation Real time
Content Type	Audio Text
Resource Type	Article

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