Abstract The results of simultaneous measurements velocity and temperature fields in a turbulent mixed convection airflow are analyzed discussed. To access local airflows, we present combination stereoscopic particle image velocimetry thermometry. obtained flow make it possible to determine the convective heat fluxes, thus giving insight into dynamics plumes Taylor–Görtler-like vortices. evalua...

Heat and mass convection ............................................................................................................................. 1 Heat convection: what it is ........................................................................................................................ 1 Types of heat convection .......................................................................

Classical theories of turbulence do not describe accurately inertial range scaling laws in turbulent convection and notably fail to model the shape of the turbulent spectrum of solar photospheric convection. To understand these discrepancies, a detailed study of scale-by-scale budgets in turbulent Rayleigh-Bénard convection is presented, with particular emphasis placed on anisotropy and inhomog...