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Numerical simulation of gas–particle dispersion in a backward-facing step flow with LES–FDF model

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Abstract

The particle dispersion in a backward-facing step flow was numerically studied. Large eddy simulation (LES) was used to simulate the gas flow and a filtered density function (FDF) transport equation was derived to solve the sub-grid scale eddies seen by the Lagrangian tracked particles. The LES/FDF model was validated by experiment and the evolution process of the vortex structures was clearly demonstrated. The numerical results of particle dispersion obtained with and without the FDF model were compared; it showed that the FDF model could apparently reflect the influence of sub-grid scale eddies on the particle dispersion in the gas–particle two-phase flow.

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Acknowledgements

The authors gratefully acknowledge the financial support of National Science Fund of China (Grant No: 10772162; 11132008), the Major Projects on Control and Rectification of Water Body Pollution (Grant No. 2009ZX07424-001) and the Qianjiang Talent Project (Grant No. 2010R10035).

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Authors and Affiliations

  1. School of Aeronautics and Astronautics, Zhejiang University, Hangzhou, 310027, People’s Republic of China

    Hanhui Jin, Yuhui Chen, Yong Chen & Canxing Wang

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  1. Hanhui Jin
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  2. Yuhui Chen
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  3. Yong Chen
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  4. Canxing Wang
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Correspondence to Hanhui Jin.

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Jin, H., Chen, Y., Chen, Y. et al. Numerical simulation of gas–particle dispersion in a backward-facing step flow with LES–FDF model. J Vis 15, 343–352 (2012). https://doi.org/10.1007/s12650-012-0135-0

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  • DOI: https://doi.org/10.1007/s12650-012-0135-0

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