Abstract
Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high aspect ratios
is associated with the appearance of stable helical vortex multiplets. By using results from stability theory generalizing Kelvin’s problem on vortex polygon stability, and systematically exploring the cavity flow, we succeeded in identifying two new stable vortex breakdown states consisting of triple and quadruple helical multiplets.
Original language | English |
---|---|
Journal | Journal of Fluid Mechanics |
Volume | 683 |
Pages (from-to) | 430-441 |
ISSN | 0022-1120 |
DOIs | |
Publication status | Published - 2011 |
Bibliographical note
© Cambridge University PressKeywords
- Vortex instability
- Vortex breakdown