Abstract
The intensification of single vortices in convective flows swirled by the Coriolis force is studied numerically. The initial disturbances, specified against the background of a steady cell, are coaxial with the cell flow and have various swirl directions, intensities, and dimensions. It is shown that the vortices are intensified no matter whether the direction of disturbing vortex rotation is co- or counter-directional with the Coriolis force. If the disturbance intensity is small as compared with that of the convective-cell flow, the growth of the azimuthal velocity circulation in the perturbing vortices depends linearly on their initial circulation. For such vortices, the energy increase is proportional to the characteristic vortex radius to the power −5/3.
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Translated from Izvestiya Rossiiskoi Academii Nauk, Mekhanika Zhidkosti i Gaza, No. 5, 2004, pp. 62–68. Original Russian Text Copyright © 2004 by Ivanov and Povarnitsyn.
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Ivanov, M.F., Povarnitsyn, M.E. Vortex intensification in convective cells. Fluid Dyn 39, 729–734 (2004). https://doi.org/10.1007/s10697-005-0006-7
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DOI: https://doi.org/10.1007/s10697-005-0006-7