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15 mins
Phase diagram of turbulent Taylor-Couette flow
Detlef Lohse, Rodolfo Ostilla-Monico, Erwin van der Poel, Roberto Verzicco, Siegfried Grossmann
Session: Wall-bounded flows 5
Session starts: Thursday 27 August, 15:00
Presentation starts: 16:15
Room: Room B

Detlef Lohse ()
Rodolfo Ostilla-Monico ()
Erwin van der Poel ()
Roberto Verzicco ()
Siegfried Grossmann ()

We will present the results of our recent numerical work on the nature of the phase diagram of turbulent Taylor-Couette (TC) flow, both with co- and counterrotating cylinder. The work can be seen as the extension of the famous experimental Andereck et al. phase diagram for Taylor-Couette flow just above the onset of instabilities, towards the ultimate turbulence regime, and now obtained numerically. In particular, we will understand when and why optimal transport of angular velocity from the inner to the outer cylinder is achieved and how this is connected to the angular velocity profile and the structures in the flow.