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15 mins
Massive turbulent separation: an investigation of shear-layer interfaces.
Francesco Stella, Nicolas Mazellier, Azeddine Kourta
Session: Control 3
Session starts: Wednesday 26 August, 10:30
Presentation starts: 11:45
Room: Room D

Francesco Stella ()
Nicolas Mazellier ()
Azeddine Kourta ()

The massively separated flow behind a backward-facing ramp is investigated using particle image velocimetry, in the perspective of designing active separation control. Beyond the usual one-point statistical analysis, we address the issue of the characteristic length-scales corrugating the interfaces featuring the turbulent separation. Our preliminary results evidence the multi-scale nature of these interfaces. This fact might hold promise for new sizing criteria for fluidic actuators intended to alleviate separation effects.