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Large-eddy simulation of fluid mixing in tee with sintered porous medium

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Abstract

Mixing processes of hot and cold fluids in a tee with and without sintered copper spheres are simulated by FLUENT using the large-eddy simulation (LES) turbulent flow model and the sub-grid scale (SGS) Smagorinsky-Lilly (SL) model with buoyancy. Comparisons of numerical results of the two cases with and without sintered copper spheres show that the porous medium significantly reduces velocity and temperature fluctuations because the porous medium can effectively restrict the fluid flow and enhance heat transfer. The porous medium obviously increases the pressure drop in the main duct. The porous medium reduces the power spectrum density (PSD) of temperature fluctuations in the frequency range from 1 Hz to 10 Hz.

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China

    Yong-wei Wang  (王永伟), Tao Lu  (卢涛), Peng-fei Cheng  (成鹏飞) & Kui-sheng Wang  (王奎升)

  2. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing, 100084, P. R. China

    Pei-xue Jiang  (姜培学)

Authors
  1. Yong-wei Wang  (王永伟)
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  2. Tao Lu  (卢涛)
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  3. Pei-xue Jiang  (姜培学)
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  4. Peng-fei Cheng  (成鹏飞)
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  5. Kui-sheng Wang  (王奎升)
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Corresponding author

Correspondence to Tao Lu  (卢涛).

Additional information

Project supported by the National Natural Science Foundation of China (No. 50906002), the National Basic Research Program of China (No. 2011CB706900), the Research Fund for the Doctoral Program of Higher Education of China (No. 20090010110006), and the Beijing Novel Program of China (No. 2008B16)

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Wang, Yw., Lu, T., Jiang, Px. et al. Large-eddy simulation of fluid mixing in tee with sintered porous medium. Appl. Math. Mech.-Engl. Ed. 33, 911–922 (2012). https://doi.org/10.1007/s10483-012-1594-9

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  • DOI: https://doi.org/10.1007/s10483-012-1594-9

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