Scaling of torque in turbulent Taylor-Couette flow with background rotation
Résumé
We experimentally study the turbulent flow between two coaxial and independently rotating cylinders. We study the torque scaling with Reynolds numbers at various rotation rates (Rotation numbers), and the behaviour of the wall shear stress when varying the rotation number at high Reynolds numbers. We compare the curves with PIV analysis of the mean flow and show the peculiar role of perfect counterrotation for the emergence of organised large scale structures in the mean part of this very turbulent flow.
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