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Journal Articles Fluid Dynamics Research Year : 2014

Helically forced MHD flows in confined cylindrical geometries

Abstract

The dynamics of a magnetically forced conducting fluid in confined geometries is studied. A pseudospectral method with volume penalisation is used to solve the resistive magnetohydrodynamic (MHD) equations. A helical magnetic field is imposed via boundary conditions, which generates a response in the velocity field for large enough magnitudes. Different helical structures are observed in the flow depending on the magnitude and direction of the forcing and the cross-sectional geometry of the fluid domain. A computational technique for finding a solenoidal vector field which can be used in complex geometries is also proposed.
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Dates and versions

hal-01005421 , version 1 (12-06-2014)

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Malcolm Roberts, Matthieu Leroy, Jorge Morales, Wouter J.T. Bos, Kai Schneider. Helically forced MHD flows in confined cylindrical geometries. Fluid Dynamics Research, 2014, 46, pp.061422. ⟨10.1088/0169-5983/46/6/061422⟩. ⟨hal-01005421⟩
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