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Effect of wall conductivity on turbulent channel flow under spanwise magnetic field
Author(s) -
Krasnov Dmitry,
Parepalli Prarthana,
Zikanov Oleg,
Boeck Thomas
Publication year - 2010
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201010250
Subject(s) - turbulence , reynolds number , magnetic field , conductivity , mechanics , flow (mathematics) , condensed matter physics , materials science , momentum (technical analysis) , physics , finance , quantum mechanics , economics
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)