This research investigates different dielectric barrier discharge (DBD) actuator configurations for affecting tip leakage flow and suppressing stall inception. Computational investigations were performed on a low speed rotor with a highly loaded tip region that was responsible for stall-onset. The actuator was mounted on the casing upstream of the rotor leading edge. Plasma injection had a significant impact on the predicted tip-gap flow and improved stall margin. The effect of changing the actuator forcing direction on stall margin was also studied. The reduction in stalling flow was closely correlated with a reduction in loading parameter that quantifies mechanisms responsible for end-wall blockage generation. The actuation reduced end-wall losses by increasing the static pressure of tip-gap flow emerging from blade suction-side. Lastly, an approximate speed scaling developed for the DBD force helped estimate force requirements for stall margin enhancement of transonic rotors.
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March 2012
Research Papers
Control of Tip-Clearance Flow in a Low Speed Axial Compressor Rotor With Plasma Actuation
Robert C. Murray,
Robert C. Murray
GE Global Research
, Niskayuna, NY 12309
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Katherine Essenhigh,
Katherine Essenhigh
GE Global Research
, Niskayuna, NY 12309
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Grover A. Bennett,
Grover A. Bennett
GE Global Research
, Niskayuna, NY 12309
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Seyed Saddoughi,
Seyed Saddoughi
GE Global Research
, Niskayuna, NY 12309
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Aspi Wadia,
Aspi Wadia
GE Aviation
, West Chester, OH 45069
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Andrew Breeze-Stringfellow
Andrew Breeze-Stringfellow
GE Aviation
, West Chester, OH 45069
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Giridhar Jothiprasad
Robert C. Murray
GE Global Research
, Niskayuna, NY 12309
Katherine Essenhigh
GE Global Research
, Niskayuna, NY 12309
Grover A. Bennett
GE Global Research
, Niskayuna, NY 12309
Seyed Saddoughi
GE Global Research
, Niskayuna, NY 12309
Aspi Wadia
GE Aviation
, West Chester, OH 45069
Andrew Breeze-Stringfellow
GE Aviation
, West Chester, OH 45069J. Turbomach. Mar 2012, 134(2): 021019 (9 pages)
Published Online: June 29, 2011
Article history
Received:
July 12, 2010
Revised:
August 22, 2010
Online:
June 29, 2011
Published:
June 29, 2011
Citation
Jothiprasad, G., Murray, R. C., Essenhigh, K., Bennett, G. A., Saddoughi, S., Wadia, A., and Breeze-Stringfellow, A. (June 29, 2011). "Control of Tip-Clearance Flow in a Low Speed Axial Compressor Rotor With Plasma Actuation." ASME. J. Turbomach. March 2012; 134(2): 021019. https://doi.org/10.1115/1.4003083
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