Measurement of the turbulent heat fluxes in mixed convection using combined stereoscopic PIV and PIT

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. evaluated mean fluxes further reveal that main roll transports substantial amount along cooling plate back heated bottom plate. Yet, associated remain positive as they dominated by correlation vertical component. More specifically, statistical analysis flux distribution reveals vortices lead more skewed distributions than plumes. Graphical abstract