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Turbulent Convection Insights from Small-Scale Thermal Forcing with Zero Net Heat Flux at a Horizontal Boundary

Griffiths, Ross; Gayen, Bishakhdatta


A large-scale circulation, a turbulent boundary layer, and a turbulent plume are noted features of convection at large Rayleigh numbers under differential heating on a single horizontal boundary. These might be attributed to the forcing, which in all studies has been limited to a unidirectional gradient over the domain scale. We instead apply forcing on a length scale smaller than the domain, and with variation in both horizontal directions. Direct numerical simulations show turbulence...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.115.204301
Access Rights: Open Access


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