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Gap size effects on centrifugally and rotationally driven instabilities

Abstract : The rotation effects on centrifugally driven instabilities in curved channel flow with a finite gap are investigated. An inviscid criterion of stability is formulated to explain the behavior of the flow when rotation and curvature effects compete to either stabilize or destabilize the flow. The stability of curved Poiseuille flow with finite gap size is studied, and it is shown that the asymmetry between the directions of rotation is enhanced when the gap size increases.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-01811164
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Innocent Mutabazi, Christiane Normand, Eduardo Wesfreid. Gap size effects on centrifugally and rotationally driven instabilities . Physics of Fluids A: Fluid Dynamics (1989-1993) , American Institute of Physics (AIP), 1992, 4 (6), pp.1199-1205. ⟨10.1063/1.858238⟩. ⟨hal-01811164⟩

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