Active Suppression of Rotating Stall Inception with Distributed Jet Actuation
An analytical and experimental investigation of the effectiveness of full-span distributed jet actuation for active suppression of long length-scale rotating stall inception is carried out. Detailed modeling and experimental verification highlight the important effects of m...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2007-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2007/56808 |
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| Summary: | An analytical and experimental investigation of the effectiveness of full-span distributed
jet actuation for active suppression of long length-scale rotating stall inception is carried
out. Detailed modeling and experimental verification highlight the important effects of mass
addition, discrete injectors, and feedback dynamics, which may be overlooked in preliminary
theoretical studies of active control with jet injection. A model of the compression system
incorporating nonideal injection and feedback dynamics is verified with forced response
measurements to predict the right trends in the movement of the critical pole associated with
the stall precursor. Active control experiments with proportional feedback control show that
the predicted stall precursors are suppressed to give a 5.5% range extension in
compressor flow coefficient. In addition, results suggest that the proposed model could be
used to design a more sophisticated controller to further improve performance while reducing
actuator bandwidth requirements. |
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| ISSN: | 1023-621X 1542-3034 |