Please use this identifier to cite or link to this item:
Title: Harmonically forced enclosed swirling flow
Authors: Cui, Y.D. 
Lopez, J.M.
Lim, T.T. 
Marques, F.
Issue Date: 2009
Citation: Cui, Y.D., Lopez, J.M., Lim, T.T., Marques, F. (2009). Harmonically forced enclosed swirling flow. Physics of Fluids 21 (3) : -. ScholarBank@NUS Repository.
Abstract: The response of steady state vortex flows in an enclosed circular cylinder driven by the harmonic modulation of the rotating end wall is investigated experimentally and numerically. Three dynamic regimes have been identified, with a continuous variation in forcing frequency between them. For very low forcing frequency, the synchronous flow approaches quasistatic adjustment, and for very large forcing frequencies the oscillations in the synchronous flow are localized in the boundary layers on the various cylinder walls. These localized wall oscillations drive the synchronous flow in the cylinder interior to the underlying axisymmetric steady basic state. The third regime occurs for forcing frequencies in the range of the most dangerous axisymmetric Hopf eigenfrequencies, with the 1:1 resonances leading to greatly enhanced oscillation amplitudes localized in the axis region where the flow manifests vortex breakdown recirculation zones. © 2009 American Institute of Physics.
Source Title: Physics of Fluids
ISSN: 10706631
DOI: 10.1063/1.3093236
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Nov 13, 2018


checked on Nov 5, 2018

Page view(s)

checked on Nov 17, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.