DETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW.
Many advanced gas turbines use sophisticated internal cooling passages to limit turbine blade temperatures. Within such passages pedestals (transverse cylinders) are frequently employed to increase heat transfer to the cooling air. This paper is concerned with the heat transfer enhancement associate...
| Asıl Yazarlar: | , |
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| Materyal Türü: | Journal article |
| Dil: | English |
| Baskı/Yayın Bilgisi: |
Hemisphere Publ Corp
1986
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| _version_ | 1826292531097239552 |
|---|---|
| author | Ireland, P Jones, T |
| author_facet | Ireland, P Jones, T |
| author_sort | Ireland, P |
| collection | OXFORD |
| description | Many advanced gas turbines use sophisticated internal cooling passages to limit turbine blade temperatures. Within such passages pedestals (transverse cylinders) are frequently employed to increase heat transfer to the cooling air. This paper is concerned with the heat transfer enhancement associated with a pedestal situated in fully developed passage flow. Results of measured local heat transfer coefficient both on the cylinder itself and on the passage wall adjacent to the cylinder are presented. The experimental technique employed is a transient method which makes use of thermochromic liquid crystals to furnish a complete map of heat transfer coefficient. The current work has investigated the variation of these heat transfer distributions with both cylinder length to diameter ratio and Reynolds number. In addition a flow visualisation study has been conducted to determine the complex secondary flows developed around the cylinder. The relationship between heat transfer enhancement and the flow field is then discussed. |
| first_indexed | 2024-03-07T03:16:08Z |
| format | Journal article |
| id | oxford-uuid:b5d96232-e11e-4e5d-b069-6888ca6da166 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:16:08Z |
| publishDate | 1986 |
| publisher | Hemisphere Publ Corp |
| record_format | dspace |
| spelling | oxford-uuid:b5d96232-e11e-4e5d-b069-6888ca6da1662022-03-27T04:36:38ZDETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b5d96232-e11e-4e5d-b069-6888ca6da166EnglishSymplectic Elements at OxfordHemisphere Publ Corp1986Ireland, PJones, TMany advanced gas turbines use sophisticated internal cooling passages to limit turbine blade temperatures. Within such passages pedestals (transverse cylinders) are frequently employed to increase heat transfer to the cooling air. This paper is concerned with the heat transfer enhancement associated with a pedestal situated in fully developed passage flow. Results of measured local heat transfer coefficient both on the cylinder itself and on the passage wall adjacent to the cylinder are presented. The experimental technique employed is a transient method which makes use of thermochromic liquid crystals to furnish a complete map of heat transfer coefficient. The current work has investigated the variation of these heat transfer distributions with both cylinder length to diameter ratio and Reynolds number. In addition a flow visualisation study has been conducted to determine the complex secondary flows developed around the cylinder. The relationship between heat transfer enhancement and the flow field is then discussed. |
| spellingShingle | Ireland, P Jones, T DETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW. |
| title | DETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW. |
| title_full | DETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW. |
| title_fullStr | DETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW. |
| title_full_unstemmed | DETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW. |
| title_short | DETAILED MEASUREMENTS OF HEAT TRANSFER ON AND AROUND A PEDESTAL IN FULLY DEVELOPED PASSAGE FLOW. |
| title_sort | detailed measurements of heat transfer on and around a pedestal in fully developed passage flow |
| work_keys_str_mv | AT irelandp detailedmeasurementsofheattransferonandaroundapedestalinfullydevelopedpassageflow AT jonest detailedmeasurementsofheattransferonandaroundapedestalinfullydevelopedpassageflow |