Experimental investigation of an aspirated fan stage
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2001.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2005
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| Online Access: | http://hdl.handle.net/1721.1/8108 |
| _version_ | 1811090180791074816 |
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| author | Schuler, Brian Joseph, 1974- |
| author2 | Jack L. Kerrebrock. |
| author_facet | Jack L. Kerrebrock. Schuler, Brian Joseph, 1974- |
| author_sort | Schuler, Brian Joseph, 1974- |
| collection | MIT |
| description | Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2001. |
| first_indexed | 2024-09-23T14:36:47Z |
| format | Thesis |
| id | mit-1721.1/8108 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T14:36:47Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/81082019-04-11T03:13:13Z Experimental investigation of an aspirated fan stage Schuler, Brian Joseph, 1974- Jack L. Kerrebrock. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Aeronautics and Astronautics. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2001. Includes bibliographical references (p. 177-179). This thesis focuses on the use of aspiration on compressor blade design. The pressure ratio can be significantly increased by controlling the development of the blade and endwall boundary layers. This concept is validated through an aspirated fan stage experiment performed in the MIT Blowdown Compressor Facility. The fan stage was designed to produce a pressure ratio of 1.6 at a throughflow adiabatic efficiency of 89% at a rotor tip speed of 750 ft/s. Aspiration equal to 0.5% of the inlet flow was applied to the blade surface of both the rotor and stator. Aspiration was also used on the endwall boundary layers. Detailed flowfield measurements are made behind the rotor and stator, and the ensemble-averaged data is compared with a 3-D, viscous analysis tool. The time-accurate flow measurements show a large blade to blade variation due to unsteady vortex shedding, which is not captured by conventional 3-D, viscous analysis tools. An incompressible, vortex shedding model calibrated to the experimental data shows that the vortex shedding induces radial flows that redistribute flow properties in the spanwise direction. 'Correction' of the experimental data using the model gives a better comparison with the 3-D, viscous analysis solution. In order to understand the possible benefits of aspiration, a meanline parameter study is performed over a range of rotor inlet Mach numbers, flow coefficients, and work coefficients. Viscous and shock losses are estimated for both conventional and aspirated stages. The results suggest that aspiration can have the largest impact on compressor performance at high stage pressure ratios. by Brian Joseph Schuler. Ph.D. 2005-08-24T20:24:05Z 2005-08-24T20:24:05Z 2001 2001 Thesis http://hdl.handle.net/1721.1/8108 51299430 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 179 p. 10596824 bytes 10596581 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Schuler, Brian Joseph, 1974- Experimental investigation of an aspirated fan stage |
| title | Experimental investigation of an aspirated fan stage |
| title_full | Experimental investigation of an aspirated fan stage |
| title_fullStr | Experimental investigation of an aspirated fan stage |
| title_full_unstemmed | Experimental investigation of an aspirated fan stage |
| title_short | Experimental investigation of an aspirated fan stage |
| title_sort | experimental investigation of an aspirated fan stage |
| topic | Aeronautics and Astronautics. |
| url | http://hdl.handle.net/1721.1/8108 |
| work_keys_str_mv | AT schulerbrianjoseph1974 experimentalinvestigationofanaspiratedfanstage |