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Spatial distribution of heat flux and fluctuations in turbulent Rayleigh-Bénard convection
Rajaram Lakkaraju, Richard. J. A. M. Stevens, Roberto Verzicco +4
We numerically investigate the radial dependence of the velocity and temperature fluctuations and of the time-averaged heat flux in a cylindrical Rayleigh-Bénard cell…
Optimal Taylor-Couette turbulence
Dennis P. M. van Gils, Sander G. Huisman, Siegfried Grossmann +2
Strongly turbulent Taylor-Couette flow with independently rotating inner and outer cylinders with a radius ratio of η= 0.716 is experimentally studied. From global torque measureme…
Ultimate Turbulent Taylor-Couette Flow
Sander G. Huisman, Dennis P. M. van Gils, Siegfried Grossmann +2
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 ima…
Thermal boundary layer profiles in turbulent Rayleigh-Bénard convection in a cylindrical sample
Richard J. A. M. Stevens, Quan Zhou, Siegfried Grossmann +3
We numerically investigate the structures of the near-plate temperature profiles close to the bottom and top plates of turbulent Rayleigh-Bénard flow in a cylindrical sample at Ray…
Horizontal Structures of Velocity and Temperature Boundary Layers in 2D Numerical Turbulent Rayleigh-Bénard Convection
Quan Zhou, Kazuyasu Sugiyama, Richard J. A. M. Stevens +3
We investigate the structures of the near-plate velocity and temperature profiles at different horizontal positions along the conducting bottom (and top) plate of a Rayleigh-Bénard…
Boundary layer structure in turbulent thermal convection and its consequences for the required numerical resolution
Olga Shishkina, Richard J. A. M. Stevens, Siegfried Grossmann +1
Results on the Prandtl-Blasius type kinetic and thermal boundary layer thicknesses in turbulent Rayleigh-Bénard convection in a broad range of Prandtl numbers are presented. By sol…