Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia

Advanced Search

Journal of Applied Mechanics and Technical Physics

2016 year, number 1

Experimental Study of the Separated Flow Structure Behind a Backward-Facing Step and a Passive Disturbance

V. I. Terekhov, Ya. I. Smul'skii, K. A. Sharov
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: турбулентный поток, отрывное течение, обратный уступ, пассивное возмущение, ребро, turbulent flow, separated flow, backward-facing step, passive disturbance, rib


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.