Work

Nonlinear dynamo in a short Taylor–Couette setup

Year: 2012

Type: article

Abstract: It is numerically demonstrated by means of a magnetohydrodynamics code that a short Taylor–Couette setup with a body force can sustain dynamo action. The magnetic threshold is comparable to what is usually obtained in spherical geometries. The linear dynamo is characterized by a rotating equatorial dipole. The nonlinear regime is characterized by fluctuating kinetic and magnetic energies and a tilted dipole whose axial component exhibits aperiodic reversals during the time evolution. These numerical evidences of dynamo action in a short Taylor–Couette setup may be useful for developing an experimental device.

Source: Physics of Fluids

DOI: 10.1063/1.4752756

Authors: C. Nore, J.-L. Guermond, R. Laguerre, J. Léorat, F. Luddens

Institutions: Centre National de la Recherche Scientifique, Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur, Texas A&M University, Royal Observatory of Belgium, Observatoire de Paris

Language: English

Topic: Fluid Dynamics and Turbulent Flows

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

Awards: Discontinuous Galerkin Methods for PDEs with Heterogeneous Coefficients, NONLINEAR FINITE ELEMENT APPROXIMATION OF FIRST-ORDER PDE'S IN L1