Comparisons between numerical predictions and experimental tests of a type of highly loaded aspirated compressor cascade are presented. The cascade profile features low solidity and low profile loss with applied blade and end-wall suction control. The cascade mid-span profile design was generated using multi-objective CFD optimization. Two successive levels of modeling were used to obtain the airfoil numerical predictions: the Euler/coupled-boundary layer solver, MISES, and RANS based CFD, executed in FLUENT and with mesh generation conducted in ICEM. A low-speed aspirated cascade rig was designed and built to allow for testing of the aspirated blade design at conditions approaching engine representative Reynolds numbers and inlet turbulence intensity levels. Both numerical and experimental results validated the aspirated cascade design concept. The results also showed evidence of a ‘soft’ failure mode for the aspirated blade when a reduced or zero suction level is applied.
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ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
June 16–20, 2014
Düsseldorf, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4560-8
PROCEEDINGS PAPER
Numerical and Experimental Findings of a Highly-Loaded Aspirated Cascade
Bronwyn Power,
Bronwyn Power
Rolls-Royce Corporation, Indianapolis, IN
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Liping Xu,
Liping Xu
University of Cambridge, Cambridge, Cambridgeshire, UK
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Steven Wellborn
Steven Wellborn
Rolls-Royce Corporation, Indianapolis, IN
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Bronwyn Power
Rolls-Royce Corporation, Indianapolis, IN
Liping Xu
University of Cambridge, Cambridge, Cambridgeshire, UK
Steven Wellborn
Rolls-Royce Corporation, Indianapolis, IN
Paper No:
GT2014-27098, V02AT37A050; 13 pages
Published Online:
September 18, 2014
Citation
Power, B, Xu, L, & Wellborn, S. "Numerical and Experimental Findings of a Highly-Loaded Aspirated Cascade." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 2A: Turbomachinery. Düsseldorf, Germany. June 16–20, 2014. V02AT37A050. ASME. https://doi.org/10.1115/GT2014-27098
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