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The effect of magnetic field advection on turbulent magnetohydrodynamic flow in a square duct
Author(s) -
Bandaru Vinodh,
Boeck Thomas,
Schumacher Jörg
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800436
Subject(s) - magnetic reynolds number , physics , magnetohydrodynamics , mechanics , turbulence , lorentz force , magnetic field , magnetohydrodynamic drive , reynolds number , classical mechanics , advection , duct (anatomy) , medicine , pathology , quantum mechanics , thermodynamics
In the field of magnetohydrodynamics, turbulent duct flows in a transverse magnetic field are of considerable interest. Their velocity fields exhibit electromagnetic boundary layers and anisotropy due to damping of turbulent fluctuations by the Lorentz force. The weak induced magnetic field is slaved to the velocity field (quasistatic limit) in laboratory experiments since the magnetic Reynolds number is small. Here we consider flow conditions with finite magnetic Reynolds number in direct numerical simulations, whereby the full induction equation needs to be solved. The modification of the imposed transverse field by the flow and other differences to the quasistatic results are briefly discussed.