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Vortex and shear flow stability skewed by a large density contrast

Joly, Laurent Vortex and shear flow stability skewed by a large density contrast. (2009) In: Analysis of Fluid Stability, 24 June - 03 July 2009, Edinburgh, United Kingdom . (Unpublished)

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Abstract

This presentation is intended to span the purposes of a worshop lecture on fundamentals to a research talk on our most recent results on fluid stability when biased by variable-density effects. Hence the lecture/talk starts with an introduction on variable-density low-speed flows with a focus on the baroclinic vorticity source in full NS equations as well as their linearized counterpart. This is illustrated with many exemples taken from geophysical and industrial flows. Then we turn to the isolated vortex stability when the fluid is radially stratified within the vortex. At last we develop our more recent stability analysis of shear flows with a large density gradient well beyond the Boussinesq approximation. Both the primary and the 2D/3D secondary stability of the plane mixing-layer are developped and illustrated.

Item Type:Invited Conference
Audience (conference):International conference without published proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
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Deposited By:Laurent JOLY

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