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Experimental study of the separated flow structure behind a backward-facing step and a passive disturbance

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Abstract

The flow in a channel with a backward-facing step and a rib mounted upstream of the step and generating flow disturbances is studied experimentally by the method of particle image velocimetry. It is demonstrated that mounting of a single rib leads to deformation of the profiles of the mean streamwise velocities and turbulent fluctuations. The effect of the position and height of a single rib on the recirculation region behind the backward-facing step is analyzed. Reduction of the recirculation region size behind the step in the case of flow reattachment upstream of the step is validated.

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    V. I. Terekhov, Ya. I. Smul’skii & K. A. Sharov

Authors
  1. V. I. Terekhov
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  2. Ya. I. Smul’skii
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  3. K. A. Sharov
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Correspondence to V. I. Terekhov.

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Original Russian Text © V.I. Terekhov, Ya.I. Smul’skii, K.A. Sharov.

Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 57, No. 1, pp. 207–215, January–February, 2016. Original article submitted April 7, 2014; revision submitted September 30, 2014.

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Terekhov, V.I., Smul’skii, Y.I. & Sharov, K.A. Experimental study of the separated flow structure behind a backward-facing step and a passive disturbance. J Appl Mech Tech Phy 57, 180–187 (2016). https://doi.org/10.1134/S002189441601020X

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  • DOI: https://doi.org/10.1134/S002189441601020X

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