Large-scale intermittency of liquid-metal channel flow in a magnetic field

Abstract

We predict a novel flow regime in liquid metals under the influence of a magnetic field. It is characterised by long periods of nearly steady, two-dimensional flow interrupted by violent three-dimensional bursts. Our prediction has been obtained from direct numerical simulations in a channel geometry at low magnetic Reynolds number and translates into physical parameters which are amenable to experimental verification under laboratory conditions. The new regime occurs in a wide range of parameters and may have implications for metallurgical applications.

arXiv comment10 pages, 4 figures

References in corpus (3)

• Experimental evidence for magnetorotational instability in a helical magnetic field
• MHD turbulence in a channel with spanwise magnetic field
• Energy decay laws in strongly anisotropic MHD turbulence

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• Influence of an external magnetic field on forced turbulence in a swirling flow of liquid metal
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• Decay of turbulence in a liquid metal duct flow with transverse magnetic field
• Do magnetic fields enhance turbulence at low magnetic Reynolds number ?
• Three-dimensionality in quasi-two dimensional flows: recirculations and barrel effects
• Recurrent bursts via linear processes in turbulent environments
• Rayleigh-Benard convection with phase changes in a Galerkin model
• Instabilities in extreme magnetoconvection
• Energy dissipation rates in low-${\Re }_m$ MHD turbulence with mean shear: Results for channel flow with spanwise field