Effect of a constant radial temperature gradient on a TaylorCouette flow with axial wall slits
Identifieur interne : 000A16 ( Main/Exploration ); précédent : 000A15; suivant : 000A17Effect of a constant radial temperature gradient on a TaylorCouette flow with axial wall slits
Auteurs : Dong Liu [Corée du Sud, République populaire de Chine] ; Sang-Hyuk Lee [Corée du Sud] ; Hyoung-Bum Kim [Corée du Sud]Source :
- Fluid Dynamics Research [ 0169-5983 ] ; 2010.
Abstract
The flow between two concentric cylinders with the inner cylinder rotating with an imposed radial temperature gradient was studied using the digital particle image velocimetry method. Four models of a stationary outer cylinder without and with different numbers of slits (6, 9 and 18) were used. The Grashof number in this study was 1000. The results showed clearly that the buoyant force due to the temperature gradient caused the helical flow; this flow occurred when the Richardson number was larger than 0.0045. The constant temperature gradient considered in this research has little effect on the transition to a turbulent Taylor vortex flow in all models.
Url:
DOI: 10.1088/0169-5983/42/6/065501
Affiliations:
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<front><div type="abstract">The flow between two concentric cylinders with the inner cylinder rotating with an imposed radial temperature gradient was studied using the digital particle image velocimetry method. Four models of a stationary outer cylinder without and with different numbers of slits (6, 9 and 18) were used. The Grashof number in this study was 1000. The results showed clearly that the buoyant force due to the temperature gradient caused the helical flow; this flow occurred when the Richardson number was larger than 0.0045. The constant temperature gradient considered in this research has little effect on the transition to a turbulent Taylor vortex flow in all models.</div>
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<name sortKey="Lee, Sang Hyuk" sort="Lee, Sang Hyuk" uniqKey="Lee S" first="Sang-Hyuk" last="Lee">Sang-Hyuk Lee</name>
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