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Effet d'un champ magnétique transversal sur la stabilité de l'écoulement de Hartmann : les modes tridimensionnels |
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| Authors: | Maher Jédidi Slim Kaddeche Ali Abdennadher Adel Gharbi Daniel Henry Hamda Ben Hadid |
| Affiliation: | 1. Institut national des sciences appliquées et de technologie, INSAT, B.P. 676, 1080 Tunis cedex, Tunisie;2. Laboratoire de mécanique des fluides, faculté des sciences de Tunis, 1060 Tunis cedex, Belvédère, Tunisie;3. Laboratoire de mécanique des fluides et d''acoustique, UMR-CNRS 5509, école centrale de Lyon, université Claude Bernard, B.P. 163, 69131 Ecully cedex, France |
| Abstract: | A numerical study is conducted in order to determine the influence of a transverse magnetic field on the three-dimensional instabilities of the Hartmann flow. We prove that the Squire transformation currently used to characterize such instabilities give satisfactory results only in the case where Ha is weak and 3D modes are slightly deviated from the 2D modes. Such a study is justified by the fact that the two-dimensional instabilities could not always explain successfully the experimental observations relating to the transition phenomenon. To cite this article: M. Jédidi et al., C. R. Mecanique 333 (2005). |
| Keywords: | Mécanique des fluides Magnétohydrodynamique Stabilité Fluid mechanics Magnetohydrodynamics Stability |
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