Vortices and waves in planar and disk flows

Details Vortices and waves in planar and disk flows Vortices and waves in planar and disk flows

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..733..177b&link_type=abstract

MHD COUETTE FLOWS: Experiments and Models. AIP Conference Proceedings, Volume 733, pp. 177-190 (2004).

Physics

Hydrodynamics

Scientific paper

We present and analyse a linear, non-resonant phenomenon of wave generation by vortices in smooth shear flows. The phenomenon is closely related to non-normality of linear dynamics of perturbations in such flows and can be well interpreted by the use of the non-modal approach, i.e. by following in time the linear dynamics of spatial Fourier harmonics of the vortex mode perturbations. We will consider both a planar two-dimensional flow with linear velocity profile and a keplerian disk flow. We will also present numerical simulations in both configurations. These results may be important for the dynamics of accretion disks.

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