Effect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational Investigation
Detailed experimental measurements have been performed to understand the effects of turbine inlet temperature distortion (hot-streaks) on the heat transfer and aerodynamic characteristics of a full-scale unshrouded high pressure turbine stage at flow conditions that are representative of those found...
| Main Authors: | , , , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado em: |
2012
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| _version_ | 1826270075397603328 |
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| author | Qureshi, I Smith, A Chana, K Povey, T |
| author_facet | Qureshi, I Smith, A Chana, K Povey, T |
| author_sort | Qureshi, I |
| collection | OXFORD |
| description | Detailed experimental measurements have been performed to understand the effects of turbine inlet temperature distortion (hot-streaks) on the heat transfer and aerodynamic characteristics of a full-scale unshrouded high pressure turbine stage at flow conditions that are representative of those found in a modern gas turbine engine. To investigate hot-streak migration, the experimental measurements are complemented by three-dimensional steady and unsteady CFD simulations of the turbine stage. This paper presents the time-averaged measurements and computational predictions of rotor blade surface and rotor casing heat transfer. Experimental measurements obtained with and without inlet temperature distortion are compared. Time-mean experimental measurements of rotor casing static pressure are also presented. CFD simulations have been conducted using the Rolls-Royce code HYDRA and are compared with the experimental results. The test turbine was the unshrouded MT1 turbine, installed in the Turbine Test Facility (previously called Isentropic Light Piston Facility) at QinetiQ, Farnborough, UK. This is a short duration transonic facility, which simulates engine-representative M, Re, Tu, N/T, and T g/T w to the turbine inlet. The facility has recently been upgraded to incorporate an advanced second-generation temperature distortion generator, capable of simulating well-defined, aggressive temperature distortion both in the radial and circumferential directions, at the turbine inlet. © 2012 American Society of Mechanical Engineers. |
| first_indexed | 2024-03-06T21:35:10Z |
| format | Journal article |
| id | oxford-uuid:45fdc46c-c92f-4108-a4fc-eb690a27b2b9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:35:10Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:45fdc46c-c92f-4108-a4fc-eb690a27b2b92022-03-26T15:11:06ZEffect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational InvestigationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:45fdc46c-c92f-4108-a4fc-eb690a27b2b9EnglishSymplectic Elements at Oxford2012Qureshi, ISmith, AChana, KPovey, TDetailed experimental measurements have been performed to understand the effects of turbine inlet temperature distortion (hot-streaks) on the heat transfer and aerodynamic characteristics of a full-scale unshrouded high pressure turbine stage at flow conditions that are representative of those found in a modern gas turbine engine. To investigate hot-streak migration, the experimental measurements are complemented by three-dimensional steady and unsteady CFD simulations of the turbine stage. This paper presents the time-averaged measurements and computational predictions of rotor blade surface and rotor casing heat transfer. Experimental measurements obtained with and without inlet temperature distortion are compared. Time-mean experimental measurements of rotor casing static pressure are also presented. CFD simulations have been conducted using the Rolls-Royce code HYDRA and are compared with the experimental results. The test turbine was the unshrouded MT1 turbine, installed in the Turbine Test Facility (previously called Isentropic Light Piston Facility) at QinetiQ, Farnborough, UK. This is a short duration transonic facility, which simulates engine-representative M, Re, Tu, N/T, and T g/T w to the turbine inlet. The facility has recently been upgraded to incorporate an advanced second-generation temperature distortion generator, capable of simulating well-defined, aggressive temperature distortion both in the radial and circumferential directions, at the turbine inlet. © 2012 American Society of Mechanical Engineers. |
| spellingShingle | Qureshi, I Smith, A Chana, K Povey, T Effect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational Investigation |
| title | Effect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational Investigation |
| title_full | Effect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational Investigation |
| title_fullStr | Effect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational Investigation |
| title_full_unstemmed | Effect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational Investigation |
| title_short | Effect of Temperature Nonuniformity on Heat Transfer in an Unshrouded Transonic HP Turbine: An Experimental and Computational Investigation |
| title_sort | effect of temperature nonuniformity on heat transfer in an unshrouded transonic hp turbine an experimental and computational investigation |
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