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Controls on entrainment of a dense chemical layer by thermal plumes

Huang, Jinshui

Description

Results from two-dimensional axisymmetric numerical models of a chemically dense layer entrained by thermal plumes, featuring a plume temperature structure fixed a priori as a Gaussian function and strongly temperature-dependent viscosity, show that the entrainment rate, Q, is controlled by the radius of the thermal plume, rT, the ratio of excess chemical to thermal buoyancy, Rb, and viscosity contrast across the two layers, γ. Fitting of the numerical results shows that Q ∼ γ0.65 rT3.90 Rb-...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/22744
Source: Physics of the Earth and Planetary Interiors
DOI: 10.1016/j.pepi.2008.01.006

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