The Influence of Horizontal Boundaries on Ekman Circulation and Angular Momentum Transport in a Cylindrical Annulus

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dc.creatorObabko, Aleksandr V.
dc.creatorCattaneo, Fausto
dc.creatorFischer, Paul F.
dc.date2008-06-27
dc.date.accessioned2026-07-07T12:21:47Z
dc.date.available2026-07-07T12:21:47Z
dc.descriptionWe present numerical simulations of circular Couette flow in axisymmetric and fully three-dimensional geometry of a cylindrical annulus inspired by Princeton MRI liquid gallium experiment. The incompressible Navier-Stokes equations are solved with the spectral element code Nek5000 incorporating realistic horizontal boundary conditions of differentially rotating rings. We investigate the effect of changing rotation rates (Reynolds number) and of the horizontal boundary conditions on flow structure, Ekman circulation and associated transport of angular momentum through the onset of unsteadiness and three-dimensionality. A mechanism for the explanation of the dependence of the Ekman flows and circulation on horizontal boundary conditions is proposed.
dc.description23 pages, 7 figures; to be published in the Topical Issue of the Physica Scripta in 2008
dc.identifierhttps://arxiv.org/abs/0806.4630
dc.identifierhttp://arxiv.org/abs/0806.4630
dc.identifierPhys.Scripta 2008:014029,2008
dc.identifierdoi:10.1088/0031-8949/2008/T132/014029
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213448
dc.subjectFluid Dynamics
dc.subjectAstrophysics
dc.titleThe Influence of Horizontal Boundaries on Ekman Circulation and Angular Momentum Transport in a Cylindrical Annulus
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