Solidity effect on corner separation and its control in a high-speed low aspect ratio compressor cascade

Solidity effect on corner separation and its control in a high-speed low aspect ratio compressor... •Solidity effect on the evolution of 3D corner separation is investigated in a high-speed low aspect ratio compressor cascade.•A new type of separation termed blade suction surface stall, is proposed, on occasion of negative S indicator values.•The relative position between the initial separation point and the blade suction surface throat position is linked with loss and associated to separation form.•The newly proposed blade suction surface stall occurs when the initial separation point moves ahead of the suction surface throat position simultaneously with the confluence of the two end side separation zones in the blade middle aft.•The blade end jet control scheme is demonstrated to verify a promising perspective of the passive blade end slot control strategy for mitigating 3D corner separation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Mechanical Sciences Elsevier

Solidity effect on corner separation and its control in a high-speed low aspect ratio compressor cascade

International Journal of Mechanical Sciences , Volume 142 – Jul 1, 2018

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0020-7403
eISSN
1879-2162
D.O.I.
10.1016/j.ijmecsci.2018.04.048
Publisher site
See Article on Publisher Site

Abstract

•Solidity effect on the evolution of 3D corner separation is investigated in a high-speed low aspect ratio compressor cascade.•A new type of separation termed blade suction surface stall, is proposed, on occasion of negative S indicator values.•The relative position between the initial separation point and the blade suction surface throat position is linked with loss and associated to separation form.•The newly proposed blade suction surface stall occurs when the initial separation point moves ahead of the suction surface throat position simultaneously with the confluence of the two end side separation zones in the blade middle aft.•The blade end jet control scheme is demonstrated to verify a promising perspective of the passive blade end slot control strategy for mitigating 3D corner separation.

Journal

International Journal of Mechanical SciencesElsevier

Published: Jul 1, 2018

References

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