| EPSRC Reference: |
GR/M08868/01 |
| Title: |
PRESSURE DROP AND HEAT TRANSFER IN PRE-SWIRL COOLING- AIR SYSTEMS OF GAS TURBINES |
| Principal Investigator: |
Owen, Professor J M |
| Other Investigators: |
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| Department: |
Mechanical Engineering |
| Organisation: |
University of Bath |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
08 February 1999 |
Ends: |
07 February 2002 |
Value (£): |
121,887
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Summary on Grant Application Form |
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Pre-swirl are used to supply the cooling air to the blades in gas turbines. In the direct-transfer system, the air is supplied at a large radius, through stationary pre-swirl nozzles, and flows directly into the blade-cooling holes in the rotating turbine disc. In the cover-plate system, the pre-swirl air is supplied at a small radius and flows radially outward in the space between the disc and a cover-plate attached to it. In the proposed research, both stationary and rotating cover-plate rigs will be used to determine the effect of geometry on the pressure drop between the pre-swirl nozzles and the blade cooling holes. By reducing the pressure drop, the pre-swirl ration can be increased with a consequent reduction in the temperature of the blade-cooling air. Transient heat transfer tests will be conducted in the rotating-disc rig for both direct-transfer and cooling plate systems. In particular, thermochromic liquid crystals and thin-film platinum resistance thermometers will be used to measure the temperature distribution and the local Nusselt numbers in the critical area around the blade-cooling holes. The experimental data will then be used to validate CFD codes and to improve the design procedures for pre-swirl cooling systems.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.bath.ac.uk |