The features of developing a counterflow zone (bubble-mode vortex breakdown or vortex explosion) at the center of an intensively swirled flow produced in a liquid-filled cylindrical container with a rotating endwall have been studied. The observation showed that the scenario of developing a bubble-mode breakdown zone with generation of counterflow is the same for cylinders with low or high aspect ratio, and it remains independent of stationary-nonstationary transition boundary for the main vortex flow.
|Journal||Thermophysics and Aeromechanics|
|Publication status||Published - 2014|
Bibliographical noteResearch was financially supported by the Russian Science Foundation (Project No. 14-29-00093).
- Confined vortex flow
- Nonstationary vortex breakdown
- Digital tracer visualization