Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.2731420
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dc.titleCharacterization of flow behavior in an enclosed cylinder with a partially rotating end wall
dc.contributor.authorYu, P.
dc.contributor.authorLee, T.S.
dc.contributor.authorZeng, Y.
dc.contributor.authorLow, H.T.
dc.date.accessioned2014-06-17T06:14:30Z
dc.date.available2014-06-17T06:14:30Z
dc.date.issued2007-05
dc.identifier.citationYu, P., Lee, T.S., Zeng, Y., Low, H.T. (2007-05). Characterization of flow behavior in an enclosed cylinder with a partially rotating end wall. Physics of Fluids 19 (5) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2731420
dc.identifier.issn10706631
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/59694
dc.description.abstractThe vortex breakdown phenomena in an enclosed cylindrical chamber with a rotating disk whose radius is smaller than that of the chamber were investigated by a numerical model based on the steady, axisymmetric Navier-Stokes equations. The flow behaviors were investigated over a wide range of parameters. The main recirculation region remains unchanged if the cylinder-to-disk ratio, the ratio of the chamber radius to the disk radius, is beyond the recirculation-invariance ratio. The recirculation-invariance ratio displays a generally linear relationship with the vertical ratio, the ratio of the chamber height to disk radius. The trends of the vortex breakdown boundary curves at different cylinder-to-disk ratios suggest that three regions, namely the quasi whole end-wall rotating region, the vortex-breakdown boundary invariance region, and the mixed region, can be used to characterize the occurrence of vortex breakdown. Depending on the specific conditions, the presence of the stationary end wall either serves to precipitate or delay the onset of vortex breakdown. The stationary end wall has the effect of reducing the physical aspect ratio but it also dissipates the fluid's angular momentum along its surface. These two opposite effects lead to different trends of the vortex-breakdown boundary curves in different regions, depending on which effect is dominant. © 2007 American Institute of Physics.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1063/1.2731420
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.contributor.departmentTEMASEK LABORATORIES
dc.description.doi10.1063/1.2731420
dc.description.sourcetitlePhysics of Fluids
dc.description.volume19
dc.description.issue5
dc.description.page-
dc.description.codenPHFLE
dc.identifier.isiut000246892700041
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