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The Influence of the Angle of Inclination of Single-Row Oval-Trench Dimples in the Stabilized Hydrodynamic Section of a Narrow Channel on the Anomalous Intensification of the Separated Turbulent Flow

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Abstract

The slope of an oval-trench dimple in the corridor package on the stabilized hydrodynamic section of the narrow channel has a dramatic effect on the anomalous intensification of the separated and vortex flows in the dimple, leading to a three- to fourfold decrease in the relative negative friction in the range of angles from 40° to 60°, an increase in the maximum velocity of separated and secondary flow up to 0.8 and 1.18 in relation to the average mass flow rate in the channel.

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Funding

This work was supported by the Russian Science Foundation, grant no. 19-19-00259.

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Authors and Affiliations

  1. St. Petersburg State Marine Technical University, 190121, St. Petersburg, Russia

    S. A. Isaev & D. V. Nikushchenko

  2. St. Petersburg State University of Civil Aviation, 196210, St. Petersburg, Russia

    S. A. Isaev & A. G. Sudakov

  3. Kazan (Volga Region) Federal University, 420008, Kazan, Russia

    S. A. Isaev & A. B. Mazo

  4. A.N. Tupolev Kazan National Research Technical University—Kazan Aviation Institute, 420111, Kazan, Russia

    I. A. Popov

Authors
  1. S. A. Isaev
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  2. A. B. Mazo
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  3. D. V. Nikushchenko
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  4. I. A. Popov
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  5. A. G. Sudakov
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Corresponding author

Correspondence to S. A. Isaev.

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The authors declare that they have no conflict of interest.

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Translated by N. Petrov

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Isaev, S.A., Mazo, A.B., Nikushchenko, D.V. et al. The Influence of the Angle of Inclination of Single-Row Oval-Trench Dimples in the Stabilized Hydrodynamic Section of a Narrow Channel on the Anomalous Intensification of the Separated Turbulent Flow. Tech. Phys. Lett. 46, 1064–1067 (2020). https://doi.org/10.1134/S1063785020110073

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  • DOI: https://doi.org/10.1134/S1063785020110073

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