Transition from vortex to wall driven turbulence production in the Taylor-Couette system with a rotating inner cylinder
Transition from vortex to wall driven turbulence production in the Taylor-Couette system with a rotating inner cylinder
Axisymmetrically stable turbulent Taylor vortices between two concentric cylinders are studied with respect to the transition from vortex to wall driven turbulent production. The outer cylinder is stationary and the inner cylinder rotates. A low Reynolds number turbulence model using the k- formulation, facilitates an analysis of the velocity gradients in the Taylor-Couette flow. For a fixed inner radius, three radius ratios 0.734, 0.941 and 0.985 are employed to identify the Reynolds number range at which this transition occurs. At relatively low Reynolds numbers, turbulent production is shown to be dominated by the outflowing boundary of the Taylor vortex. As the Reynolds number increases, shear driven turbulence (due to the rotating cylinder) becomes the dominating factor. For relatively small gaps turbulent flow is shown to occur at Taylor numbers lower than previously reported.
taylor-couette flow, cfd, low reynolds number turbulence
207-226
Batten, W.M.J.
8a6a68c7-b614-4f62-9d56-54eb38a45a94
Bressloff, N.W.
4f531e64-dbb3-41e3-a5d3-e6a5a7a77c92
Turnock, S.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
2002
Batten, W.M.J.
8a6a68c7-b614-4f62-9d56-54eb38a45a94
Bressloff, N.W.
4f531e64-dbb3-41e3-a5d3-e6a5a7a77c92
Turnock, S.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Batten, W.M.J., Bressloff, N.W. and Turnock, S.
(2002)
Transition from vortex to wall driven turbulence production in the Taylor-Couette system with a rotating inner cylinder.
International Journal for Numerical Methods in Fluids, 38 (3), .
(doi:10.1002/fld.208).
Abstract
Axisymmetrically stable turbulent Taylor vortices between two concentric cylinders are studied with respect to the transition from vortex to wall driven turbulent production. The outer cylinder is stationary and the inner cylinder rotates. A low Reynolds number turbulence model using the k- formulation, facilitates an analysis of the velocity gradients in the Taylor-Couette flow. For a fixed inner radius, three radius ratios 0.734, 0.941 and 0.985 are employed to identify the Reynolds number range at which this transition occurs. At relatively low Reynolds numbers, turbulent production is shown to be dominated by the outflowing boundary of the Taylor vortex. As the Reynolds number increases, shear driven turbulence (due to the rotating cylinder) becomes the dominating factor. For relatively small gaps turbulent flow is shown to occur at Taylor numbers lower than previously reported.
Text
batt_02a.pdf
- Accepted Manuscript
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Published date: 2002
Keywords:
taylor-couette flow, cfd, low reynolds number turbulence
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Local EPrints ID: 21991
URI: http://eprints.soton.ac.uk/id/eprint/21991
ISSN: 0271-2091
PURE UUID: 09b72dec-2134-4e0d-8305-83d13f426dd0
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Date deposited: 17 Mar 2006
Last modified: 16 Mar 2024 02:37
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Author:
W.M.J. Batten
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