Abstract
AbstractThe application of a uniform external magnetic field on the turbulent duct flow of an electrically conducting fluid leads to several interesting changes in the structure and the mean charateristics of the flow. This is fairly well understood from the existing studies of duct flows in the low magnetic Reynolds number (Rm) limit. In this paper, we present the results for magnetohydrodynamic duct flow at moderate Rm obtained from direct numerical simulations (DNS). Several differences are observed to occur in this case as compared to low Rm flows, such as increased Hartmann layer thickness and enhanced large scale turbulence in the core region of the duct cross‐section due to partial expulsion of magnetic flux. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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