Effect of pool rotation on thermocapillary convection in shallow annular pool of silicone oil

Both the numerical simulation and LSA results indicate that the pool rotation destabilizes the basic steady axisymmetric thermocapillary flow in the present Ta range (Ta⩽0.806). The influence of the pool rotation on the instability of the thermocapillary flow is distinguishable even for such a small rotating rate of the shallow annular pool. This can be explained by the additional energy supply from the azimuthal flow field induced by the Coriolis force.