Effect of wall conductivity on turbulent channel flow under spanwise magnetic field |
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Authors: | Dmitry Krasnov Prarthana Parepalli Oleg Zikanov Thomas Boeck |
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Affiliation: | 1. Institute of Thermodynamics and Fluid Mechanics, Ilmenau University of Technology, P.O. Box 100565, 98684 Ilmenau, Germany.;2. Department of Mechanical Engineering, University of Michigan - Dearborn, USA. |
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Abstract: | The effect of wall conductivity on turbulence in electrically conducting fluid in the presence of a constant magnetic field is considered. A channel flow with a spanwise magnetic field is analyzed using high-resolution direct numerical simulations performed for the case of low magnetic Reynolds number. It is found that the effect of suppression of wall-normal momentum transfer and reduction of wall friction identified earlier for the flow with perfectly insulating walls is enhanced if the walls are electrically conducting. (© 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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