Ultimate turbulent Taylor-Couette flow.

@article{Huisman2012UltimateTT,
  title={Ultimate turbulent Taylor-Couette flow.},
  author={Sander G. Huisman and Dennis P M van Gils and S. K. Grossmann and Chao Sun and Detlef Lohse},
  journal={Physical review letters},
  year={2012},
  volume={108 2},
  pages={
          024501
        }
}
The flow structure of strongly turbulent Taylor-Couette flow with Reynolds numbers up to Re(i)=2×10(6) of the inner cylinder is experimentally examined with high-speed particle image velocimetry (PIV). The wind Reynolds numbers Re(w) of the turbulent Taylor-vortex flow is found to scale as Re(w)∝Ta(1/2), exactly as predicted by Grossmann and Lohse [Phys. Fluids 23, 045108 (2011).] for the ultimate turbulence regime, in which the boundary layers are turbulent. The dimensionless angular velocity… 

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