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Appl. Sci. 2016, 6(12), 421; doi:10.3390/app6120421

Effect of Slot at Blade Root on Compressor Cascade Performance under Different Aerodynamic Parameters

1
National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing 100191, China
2
Collaborative Innovation Center of Advanced Aero-Engine, Beihang University, Beijing 100191, China
*
Author to whom correspondence should be addressed.
Academic Editors: Pericles Pilidis and Theoklis Nikolaidis
Received: 9 November 2016 / Revised: 30 November 2016 / Accepted: 6 December 2016 / Published: 10 December 2016
(This article belongs to the Special Issue Gas Turbines Propulsion and Power)
View Full-Text   |   Download PDF [5315 KB, uploaded 10 December 2016]   |  

Abstract

The effects of compressor aerodynamic parameters, such as pitch-chord ratio, aspect ratio, and fillet, on the cascade performance have been studied in this paper. Slot configuration at the root of the blade has been proved to be an efficient passive control method for the corner separation control in compressor cascade. The combined effects of the pitch-chord ratio, aspect ratio, and blade fillet with a slot configuration on the blade, have also been studied. Larger corner separation caused by the high pitch-chord ratio can be eliminated by the slot, which leads to fewer blades with almost the same or even better cascade performance. Various aspect ratios, together with the slot configuration, have been investigated and all of them have a positive effect on the cascade performance. For the blade with the blade fillet, the slot still has a positive effect on the control of the corner separation, while cascade performance with just a slot configuration is better than the slot configuration under the influence of the blade fillet. View Full-Text
Keywords: slot; aspect ratio; pitch-chord ratio; blade fillet; flow control; corner separation; compressor cascade slot; aspect ratio; pitch-chord ratio; blade fillet; flow control; corner separation; compressor cascade
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Liu, Y.; Sun, J.; Tang, Y.; Lu, L. Effect of Slot at Blade Root on Compressor Cascade Performance under Different Aerodynamic Parameters. Appl. Sci. 2016, 6, 421.

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