Rotating Rayleigh–Bénard convection

Global rotation is common for geo- and astrophysical situations and we will approach this in the lab by rapidly rotating the RBC cells about their vertical axis. Depending on the Ra number and the overall rotation strength different regimes can be entered, each with unique overall heat transport and complex flow dynamics. Ultimately, we wish to probe the geostrophic turbulent regime, important in geo- and astrophysical context. This regime is poorly understood especially at large Rayleigh numbers. The construction of a rotating table onto which the RBC cells will be put is finished and the rotating RBC facility is currently being tested.

Figure 1:

A photo of the rotating table onto which we will place the 2 m high RBC sample. Ultimately, we wish to probe the geostrophic turbulent regime in the lab, important in geo- and astrophysical context.


Contact: Dennis P.M. van Gils, Holger Nobach, Guenter Ahlers, Eberhard Bodenschatz