Turbulent Flow and Heat Transfer in Circular Couette Flows in Concentric Annulus
A numerical study is performed to investigate heat transfer and fluid flow in the hydrodynamically and thermally fully-developed region of an annulus, consisting of a heated rotating inner cylinder and a stationary insulated outer cylinder. Emphasis is placed on the effect of rotation of an inner co...
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| Format: | Article |
| Language: | English |
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Wiley
1998-01-01
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| Series: | International Journal of Rotating Machinery |
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| Online Access: | http://dx.doi.org/10.1155/S1023621X98000049 |
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| author | Shuichi Torii Wen-Jei Yang |
| author_facet | Shuichi Torii Wen-Jei Yang |
| author_sort | Shuichi Torii |
| collection | DOAJ |
| description | A numerical study is performed to investigate heat transfer and fluid flow in the hydrodynamically and thermally fully-developed region of an annulus, consisting of a heated
rotating inner cylinder and a stationary insulated outer cylinder. Emphasis is placed on the
effect of rotation of an inner core on the flow structure and the thermal field. A Reynolds
stress turbulence model is employed to determine three normal components of the Reynolds stress and its off-diagonal one. The turbulent heat flux is expressed by Boussinesq approximation in which the eddy diffusivity.for heat is given as functions of the temperature variance t2¯ and the dissipation rate of temperate fluctuations εt. The governing boundarylayer equations are discretized by means of a control volume finite-difference technique and numerically solved using the marching procedure. An inner core rotation causes an amplification of the three normal components of the Reynolds stress over the whole cross section, resulting in a substantial enhancement in the Nusselt number. |
| format | Article |
| id | doaj-art-5c17c4e77299438e97df5f4e6eee4c7d |
| institution | Kabale University |
| issn | 1023-621X |
| language | English |
| publishDate | 1998-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-5c17c4e77299438e97df5f4e6eee4c7d2025-02-03T01:06:44ZengWileyInternational Journal of Rotating Machinery1023-621X1998-01-0141354810.1155/S1023621X98000049Turbulent Flow and Heat Transfer in Circular Couette Flows in Concentric AnnulusShuichi Torii0Wen-Jei Yang1Department of Mechanical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, JapanDepartment of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor 48109, MI, USAA numerical study is performed to investigate heat transfer and fluid flow in the hydrodynamically and thermally fully-developed region of an annulus, consisting of a heated rotating inner cylinder and a stationary insulated outer cylinder. Emphasis is placed on the effect of rotation of an inner core on the flow structure and the thermal field. A Reynolds stress turbulence model is employed to determine three normal components of the Reynolds stress and its off-diagonal one. The turbulent heat flux is expressed by Boussinesq approximation in which the eddy diffusivity.for heat is given as functions of the temperature variance t2¯ and the dissipation rate of temperate fluctuations εt. The governing boundarylayer equations are discretized by means of a control volume finite-difference technique and numerically solved using the marching procedure. An inner core rotation causes an amplification of the three normal components of the Reynolds stress over the whole cross section, resulting in a substantial enhancement in the Nusselt number.http://dx.doi.org/10.1155/S1023621X98000049Circular Couette flowReynolds stress modelTaylor numberTwo-equation heat transfer model. |
| spellingShingle | Shuichi Torii Wen-Jei Yang Turbulent Flow and Heat Transfer in Circular Couette Flows in Concentric Annulus International Journal of Rotating Machinery Circular Couette flow Reynolds stress model Taylor number Two-equation heat transfer model. |
| title | Turbulent Flow and Heat Transfer in Circular Couette
Flows in Concentric Annulus |
| title_full | Turbulent Flow and Heat Transfer in Circular Couette
Flows in Concentric Annulus |
| title_fullStr | Turbulent Flow and Heat Transfer in Circular Couette
Flows in Concentric Annulus |
| title_full_unstemmed | Turbulent Flow and Heat Transfer in Circular Couette
Flows in Concentric Annulus |
| title_short | Turbulent Flow and Heat Transfer in Circular Couette
Flows in Concentric Annulus |
| title_sort | turbulent flow and heat transfer in circular couette flows in concentric annulus |
| topic | Circular Couette flow Reynolds stress model Taylor number Two-equation heat transfer model. |
| url | http://dx.doi.org/10.1155/S1023621X98000049 |
| work_keys_str_mv | AT shuichitorii turbulentflowandheattransferincircularcouetteflowsinconcentricannulus AT wenjeiyang turbulentflowandheattransferincircularcouetteflowsinconcentricannulus |