ABSOLUTE CONVECTIVE INSTABILITY OF THE BATCHELOR VORTEX/

Authors
OLENDRARU C SELLIER A ROSSI M HUERRE P
Citation
C. Olendraru et al., ABSOLUTE CONVECTIVE INSTABILITY OF THE BATCHELOR VORTEX/, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 323(3), 1996, pp. 153-159
Citations number
12
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie → ACNP
ISSN journal
12518069
Volume
323
Issue
3
Year of publication
1996
Pages
153 - 159
Database
ISI
SICI code
1251-8069(1996)323:3<153:ACIOTB>2.0.ZU;2-O
Abstract
The absolute/convective nature of the instability sustained by the Bat chelor vortex is determined in the plane of swirl and co-flow paramete rs for different azimuthal wavenumbers. Swirl is shown to induce a tra nsition to absolute instability for jets and wakes without requiring a ny counter-flow. The transitional helical mode is n = -1 for wakes and n = -2 or n = -3 for co-flowing jets.