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A model for turbulent dissipation rate in a constant pressure boundary layer

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Abstract

Estimation of the turbulent dissipation rate in a boundary layer is a very involved process. Experimental determination of either the dissipation rate or the Taylor microscale, even in isotropic turbulence, which may occur in a portion of the turbulent boundary layer, is known to be a difficult task. For constant pressure boundary layers, a model for the turbulent dissipation rate is proposed here in terms of the local mean flow quantities. Comparable agreement between the estimated Taylor microscale and Kolmogorov length scale with other data in the logarithmic region suggests usefulness of this model in obtaining these quantities experimentally.

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Acknowledgments

The authors wish to thank Prof. J. K. Eaton for the data.

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Authors and Affiliations

  1. Faculty, Department of Aerospace Engineering, Jain University, Bangalore, 562112, India

    J Dey

  2. Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560012, India

    P Phani Kumar

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  1. J Dey
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  2. P Phani Kumar
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Correspondence to P Phani Kumar.

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Dey, J., Phani Kumar, P. A model for turbulent dissipation rate in a constant pressure boundary layer. Sādhanā 41, 435–439 (2016). https://doi.org/10.1007/s12046-016-0480-0

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  • DOI: https://doi.org/10.1007/s12046-016-0480-0

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