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Session: Vortex Dynamics 3
Session starts: Wednesday 26 August, 10:30
Presentation starts: 11:30
Room: Room B

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Daniele Fiscaletti (Lab. for Aero & Hydrodinamics, Department of Mechanical Engineering, Delft University of Technology, Leeghwaterstraat 21 2628 CA Delft, The Netherlands)
Antonio Attili (Clean Combustion Research Center King Abdullah University of Science and Technology, Saudi Arabia)
Fabrizio Bisetti (Clean Combustion Research Center King Abdullah University of Science and Technology, Saudi Arabia)
Gerrit Elsinga (Lab. for Aero & Hydrodinamics, Department of Mechanical Engineering, Delft University of Technology, Leeghwaterstraat 21 2628 CA Delft, The Netherlands)

Abstract:
The interaction between scales is investigated in a turbulent mixing layer. The large-scale amplitude modulation of the small scales already observed in other works depends on the crosswise location. Large-scale positive fluctuations correlate with a stronger activity of the small scales on the low speed-side of the mixing layer, and a reduced activity on the high speed-side. However, from physical considerations we would expect the scales to interact in a qualitatively similar way within the flow and across different turbulent flows. Therefore, instead of the large-scale fluctuations, the large-scale gradients modulation of the small scales has been additionally investigated.