Fluid Mechanics and Acoustics Laboratory - UMR 5509

LMFA - UMR 5509
Laboratoire de Mécanique des Fluides et d’Acoustique
Lyon
France


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Home > Teams > Turbulence & Instabilities > Publications T&I > Publications T&I 2014

Article in Fluid Dyn. Res. (2014)

Self-organization of helically forced MHD flow in confined cylindrical geometries

Malcolm Roberts, Matthieu Leroy, Jorge Morales, Wouter Bos & Kai Schneider

Self-organization of helically forced MHD flow in confined cylindrical geometries

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 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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