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Magnetic effect on the formation of longitudinal vortices in a rotating laminar boundary layer
Author(s) -
Lin MingHan
Publication year - 2005
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1139
Subject(s) - laminar flow , vortex , reynolds number , boundary layer , mechanics , physics , prandtl number , magnetic field , classical mechanics , instability , rotation (mathematics) , magnetic prandtl number , position (finance) , flow (mathematics) , wavenumber , mathematics , turbulence , geometry , optics , heat transfer , finance , quantum mechanics , economics , nusselt number
This paper presents a numerical study of magnetic effect on the formation of longitudinal vortices in a rotating laminar boundary layer. The criterion for the position marking the onset of longitudinal vortices is defined in this paper. The onset position characterized by the rotational Goertler number G δ ,rot , depends on the local rotation number, Reynolds number, the magnetic field parameter, the Prandtl number and the wave number. The results show that positive rotation destabilizes the flow. The flow is found to become more unstable to the vortex mode of instability as the value of magnetic field parameter M increases. The numerical data shows good agreement with the experimental results. Copyright © 2005 John Wiley & Sons, Ltd.