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GPU-Based flow simulation with complex boundaries

Wei Li, Zhe Fan, Xiaoming Wei, Arie Kaufman
Siemens Corporate Research, Princeton, NJ 08540
(2003)

@article{ligpu,

   title={GPU-Based Flow Simulation with Complex Boundaries},

   author={Li, W. and Fan, Z. and Wei, X. and Kaufman, A.}

}

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We present a physically-based flow simulation which supports complex boundary conditions running on the graphics processing unit (GPU). We employ the Lattice Boltzmann Method (LBM), a relatively new discrete-space discrete-time method, for computing the flow field. To handle complex, moving and deformable boundaries, we propose a generic voxelization algorithm of the boundaries using depth peeling, and extend it to a dynamic boundary generation method that converts any geometric boundary to LBM boundary nodes on-the-fly. Our implementation incorporates various optimizations to fully exploit the computation power of the GPU. As a result, the GPU-based simulation can be an order of magnitude faster than the CPU version, while generating simulation results with the same accuracy.
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