MHD turbulence in a channel with spanwise field
نویسندگان
چکیده
We study turbulent channel flow of an electrically conducting liquid with a homogeneous magnetic field imposed in the spanwise direction. The Lorentz force is modelled using the quasistatic approximation. Direct and large-eddy simulations are performed for hydrodynamic Reynolds numbers Re=10000 and Re=20000 and the Hartmann number varying in a wide range. The main effect of the magnetic field is the suppression of turbulent velocity fluctuations and momentum transfer in the wall-normal direction. Comparing the results from direct and large-edddy simulations we show that the dynamic Smagorinsky model accurately reproduces the flow transformation.
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