Effect of aspect ratio on vortex distribution and heat transfer in rotating Rayleigh-Bénard convection.

  title={Effect of aspect ratio on vortex distribution and heat transfer in rotating Rayleigh-B{\'e}nard convection.},
  author={Richard J.A.M. Stevens and Jim Overkamp and Detlef Lohse and Herman J.H. Clercx},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  volume={84 5 Pt 2},
Numerical and experimental data for the heat transfer as a function of the Rossby number Ro in turbulent rotating Rayleigh-Bénard convection are presented for the Prandtl number Pr=4.38 and the Rayleigh number Ra=2.91×10(8) up to Ra=4.52×10(9). The aspect ratio Γ≡D/L, where L is the height and D the diameter of the cylindrical sample, is varied between Γ=0.5 and 2.0. Without rotation, where the aspect ratio influences the global large-scale circulation, we see a small-aspect-ratio dependence in… Expand

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