Thermal convection with a freely moving top boundary

摘要: In thermal convection, coherent flow structures emerge at high Rayleigh numbers as a result of intrinsic hydrodynamic instability and self-organization. They range from small-scale plumes that are produced near both the top bottom boundaries to large-scale circulations across entire convective volume. These exert viscous forces upon any boundary. Such will affect boundary which is free deform or change position. our experiment, we study dynamics floats on upper surface fluid. This seemingly passive subjected solely stress underneath. However, thermally insulates fluid, modifying bulk flow. As consequence, interaction between results in regular oscillation. We report here some aspects fluid discuss possible links experiment continental drift.