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Optimization of solver for gas flow modeling

D. Savichkin, O. Dodulad, Yu. Kloss
National Research Centre "Kurchatov Institute", Akademika Kurchatova pl, Moscow 123182, Russian Federation
Journal of Physics: Conference Series, 510, 012049, 2014

@article{1742-6596-510-1-012049,

   author={D Savichkin and O Dodulad and Yu Kloss},

   title={Optimization of solver for gas flow modeling},

   journal={Journal of Physics: Conference Series},

   volume={510},

   number={1},

   pages={012049},

   url={http://stacks.iop.org/1742-6596/510/i=1/a=012049},

   year={2014}

}

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The main purpose of the work is optimization of the solver for rarefied gas flow modeling based on the Boltzmann equation. Optimization method is based on SIMD extensions for x86 processors. Computational code is profiled and manually optimized with SSE instructions. Heat flow, shock waves and Knudsen pump are modeled with optimized solver. Dependencies of computational time from mesh sizes and CPU capabilities are provided.
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