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Effects of plane strain on inhomogeneous turbulence

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Abstract

The influence of the mean plane strain on the turbulence transportation is investigated by large eddy simulation (LES) in the shearless turbulence mixing layer. It is found that the mean strains enhance the turbulent fluctuations in the mixing region. Compression in the inhomogeneous direction can greatly increase the transport of turbulent kinetic energy by triple correlation terms, while stretching in the inhomogeneous direction decreases the turbulence transportation. The gradient diffusion models for turbulent transportation are evaluated and it is found that the intermittency consideration can improve the prediction ability of the gradient-type models for the triple correlation terms.

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Authors and Affiliations

  1. Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, China

    Zhaoshun Zhang, Guixiang Cui & Chunxiao Xu

  2. LMFA, UMR CNRS 5509, Ecole Centrale de Lyon, Ecully

    L. Shao, H. Pascal & J. P. Bertoglio

Authors
  1. Zhaoshun Zhang
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  2. Guixiang Cui
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  3. Chunxiao Xu
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  4. L. Shao
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  5. H. Pascal
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  6. J. P. Bertoglio
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Additional information

Project supported by the Sino-French Laboratory in Beijing and the National Natural Science Foundation of China (Grant No. 19572041).

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Zhang, Z., Cui, G., Xu, C. et al. Effects of plane strain on inhomogeneous turbulence. Sci. China Ser. A-Math. 42, 154–161 (1999). https://doi.org/10.1007/BF02876567

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  • DOI: https://doi.org/10.1007/BF02876567

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