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Marginal turbulent MHD flow in a square duct

Shatrov, V.; Gerbeth, G.

Direct numerical simulations were performed of the turbulent flow in a straight square duct in a transverse magnetic field. Without magnetic field the turbulence can be maintained for values of the bulk Reynolds number above approximately Re=1077 [1]. In the magnetohydrodynamic case this minimal value of the bulk Reynolds number increases with the Hartmann number. The flow is laminar at Re=3000 when the Hartmann number is larger than Ha=12.5 and the flow is turbulent for Ha < 12.0. The secondary mean flow structure is analyzed.

  • Physics of Fluids 22(2010), 084101

Permalink: https://www.hzdr.de/publications/Publ-13913
Publ.-Id: 13913