Heat transfer measurements in turbines
Includes bibliographical references (leaf 17)
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Technical Report |
| Published: |
Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1972]
2016
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| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/104417 |
| _version_ | 1811089496789221376 |
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| author | Louis, Jean F. (Jean François) Demirjian, Ara Manuel Topping, Richard Francis |
| author2 | Massachusetts Institute of Technology. Gas Turbine Laboratory |
| author_facet | Massachusetts Institute of Technology. Gas Turbine Laboratory Louis, Jean F. (Jean François) Demirjian, Ara Manuel Topping, Richard Francis |
| author_sort | Louis, Jean F. (Jean François) |
| collection | MIT |
| description | Includes bibliographical references (leaf 17) |
| first_indexed | 2024-09-23T14:20:07Z |
| format | Technical Report |
| id | mit-1721.1/104417 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:20:07Z |
| publishDate | 2016 |
| publisher | Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1972] |
| record_format | dspace |
| spelling | mit-1721.1/1044172019-04-10T14:24:43Z Heat transfer measurements in turbines Louis, Jean F. (Jean François) Demirjian, Ara Manuel Topping, Richard Francis Massachusetts Institute of Technology. Gas Turbine Laboratory TJ778 .L67x Gas-turbines -- Cooling Heat -- Transmission -- Measurement Includes bibliographical references (leaf 17) A blowdown turbine facility and an experimental program for the study of heat transfer in cooled turbines are described. The blowdown facility introduces the concept of using short duration experiments to test turbines by scaling the metal surface temperatures down to room temperature, and consequently scaling pressures and mass flow rates so that Reynolds, Mach and Prandtl numbers are kept unchanged. Hence, the Nusselt number is also unchanged. The short operating time assures that the surfaces remain nearly isothermal and that fast instrumentation, pressure transducers and thin film gauges can be used to record average and unsteady pressures and heat transfer. For example, the instrumentation is able to resolve heat transfer and pressure fluctuation induced by rotating blades passing over the stationary shrouds. Both the operation and demonstration runs of the blowdown facility are described. Finally, a two dimensional steady flow film cooling experiment yields heat transfer coefficients under conditions which model the average tangential flow over the stationary shrouds of the turbine under test in the blowdown facility. The results indicate that the curvature of the shroud leads to an increase of heat transfer by 15% and the separation of the coolant flow at the injection edge reduces the cooling effectiveness just downstream of the injection slot. Supported by the Air Force Aero Propulsion Laboratory, Air Force Systems Command, U. S. Air Force, under Contract No. F33615-71-C-1016 2016-09-27T19:59:05Z 2016-09-27T19:59:05Z 1972 Technical Report http://hdl.handle.net/1721.1/104417 05804930 GTL report #113 29 leaves application/pdf Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1972] |
| spellingShingle | TJ778 .L67x Gas-turbines -- Cooling Heat -- Transmission -- Measurement Louis, Jean F. (Jean François) Demirjian, Ara Manuel Topping, Richard Francis Heat transfer measurements in turbines |
| title | Heat transfer measurements in turbines |
| title_full | Heat transfer measurements in turbines |
| title_fullStr | Heat transfer measurements in turbines |
| title_full_unstemmed | Heat transfer measurements in turbines |
| title_short | Heat transfer measurements in turbines |
| title_sort | heat transfer measurements in turbines |
| topic | TJ778 .L67x Gas-turbines -- Cooling Heat -- Transmission -- Measurement |
| url | http://hdl.handle.net/1721.1/104417 |
| work_keys_str_mv | AT louisjeanfjeanfrancois heattransfermeasurementsinturbines AT demirjianaramanuel heattransfermeasurementsinturbines AT toppingrichardfrancis heattransfermeasurementsinturbines |