An Experimental Investigation on the Flow Around a Circular Cylinder in the First Critical Subregion PDF Download

Author: Hyun Jin Kim
Publisher:
ISBN:
Category : Aerospace engineering
Languages : en
Pages : 506

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Book Description
An experimental investigation has been carried out on the flow transitions around a smooth circular cylinder in the initial stage of the critical Reynolds number region, where drag coefficient starts to decrease. In this Reynolds number region, intermitent reattachment of the separated boundary layer was found, while only initial separation position excursion was observed in the subcritical region. Large spanwise variations in the surface pressure and wake velocity observed in the first critical subregion were associated with local wake width pulsations caused by spanwise phase variations in the unsteady flow reattachment.