Journal article

Mechanism of sweep event attenuation using micro-cavities in a turbulent boundary layer

Anton Silvestri, Farzin Ghanadi, Maziar Arjomandi, Benjamin Cazzolato, Anthony Zander, Rey Chin

PHYSICS OF FLUIDS | AMER INST PHYSICS | Published : 2018

Abstract

Cavity arrays have been identified as a potential passive device to disrupt and capture sweep events, which are responsible for the excess Reynolds stresses in the boundary layer. In the present study, the mechanism of the attenuation of captured sweep events has been analyzed, as well as the non-linear relationship between the volume of the backing cavity and the reduction in sweep intensity. The influence of cavity array on the turbulent boundary layer has been analyzed, with a total of six different backing cavity arrangements with varying volumes. Three of the backing cavities have been used to determine the non-linear relationship between the effectiveness of the cavity array in reducin..

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University of Melbourne Researchers