Wolstencroft, M.; Davies, J; Davies, Rhodri
An investigation of the power law relationship between Nusselt number (Nu) and Rayleigh number (Ra) for Earth's convecting mantle is presented. The Nu(Ra) relationship was calculated from the results of a model with three dimensional spherical geometry and free slip boundary conditions. Both basally and internally heated convection has been examined. For Nu (Ra) = a Raβ, β was found to be 0.294 ± 0.004 for basally heated systems, which is lower than the value of 1/3 suggested by conventional...[Show more]
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