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Numerical simulation of dynamics of turbulent wakes behind towed bodies in linearly stratified media

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Abstract

A hierarchy of semiempirical turbulence models of second order is involved for the description of a fluid flow in a far turbulent wake behind a towed body. The most complicated model includes the differential equations for normal Reynolds stresses transfer as well as the equation for the triple correlations of fluctuations of the vertical velocity component. Results of calculations are represented. They demonstrate the dynamics of a far turbulent wake in a linearly stratified medium in comparison with dynamics of a far momentumless turbulent wake. Anisotropic decay of turbulence in a far wake behind a towed body is numerically investigated. A numerical model of passive scalar dynamics in turbulent wakes behind bodies moving in a linearly stratified medium is represented.

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Authors and Affiliations

  1. Institute of Computational Technologies, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    G. G. Chernykh

  2. Siberian State University of Telecommunications and Informatics, Novosibirsk, 630102, Russia

    G. G. Chernykh

  3. Kuzbass State Pedagogical Academy, Novokuznetsk, 654027, Russia

    A. V. Fomina

  4. Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand

    N. P. Moshkin

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  1. G. G. Chernykh
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  3. N. P. Moshkin
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Correspondence to G. G. Chernykh.

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Chernykh, G.G., Fomina, A.V. & Moshkin, N.P. Numerical simulation of dynamics of turbulent wakes behind towed bodies in linearly stratified media. J. Engin. Thermophys. 18, 279–305 (2009). https://doi.org/10.1134/S1810232809040031

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  • DOI: https://doi.org/10.1134/S1810232809040031

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