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We present a numerical study of Rayleigh-B\'enard convection disturbed by alongitudinal wind. Our results show that under the action of the wind, thevertical heat flux through the cell initially decreases, due to the mechanismof plumes-sweeping, and then increases again when turbulent forced convectiondominates over the buoyancy. As a result, the Nusselt number is a non-monotonicfunction of the shear Reynolds number. We provide a simple model that captureswith good accuracy all the dynamical regimes observed. We expect that ourfindings can lead the way to a more fundamental understanding of the of thecomplex interplay between mean-wind and plumes ejection in theRayleigh-B\'enard phenomenology.

Heat flux scaling in turbulent Rayleigh-B\'enard convection with an imposed longitudinal wind