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Plume generation in natural thermal convection at high Rayleigh and Prandtl numbers

Lithgow-Bertelloni, C; Richards, M; Conrad, C; Griffiths, Ross


We study natural thermal convection of a fluid (corn syrup) with a large Prandtl number (103-107) and temperature-dependent viscosity. The experimental tank (1 x 1 x 0.3 m) is heated from below with insulating top and side boundaries, so that the fluid experiences secular heating as experiments proceed. This setup allows a focused study of thermal plumes from the bottom boundary layer over a range of Rayleigh numbers relevant to convective plumes in the deep interior of the Earth's mantle. The...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
Source: Journal of Fluid Mechanics
DOI: 10.1017/S0022112001003706


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