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Numerical analysis of secondary flow topologies of low-speed axial fans from compressor to load-controlled windmill

Courty-Audren, Suk-Kee and Ortolan, Aurélie and Carbonneau, Xavier and Binder, Nicolas and Challas, Florent Numerical analysis of secondary flow topologies of low-speed axial fans from compressor to load-controlled windmill. (2017) In: 12th European Conference on Turbomachinery Fluid dynamics & Thermodynamics (ETC12), 3 April 2017 - 7 April 2017 (Stockholm, Sweden).

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Abstract

mode to loaded windmill. A first objective is to identify generic patterns of rotor separation topology at windmill and bring light on the mechanisms responsible for it. This study also aims at numerically providing new elements of understanding on tip leakage flows and curvature effects while shifting from compressor to turbine operation. Two machines were investigated : a conventional fan and an innovative design meant to reach both high compressor and turbine efficiencies. In compressor or turbine operation, the tip leakage flow is located on the blade suction side. However, the location of the latter is inverted from one mode to the other. The inversion of the pressure gradient leads, near the hub boundary layer of a blade passage, to an inversion of the cross-flow direction.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Form the 6th edition the proceedings are indexed by Scopus.
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > SAFRAN (FRANCE)
Laboratory name:
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Deposited By: Nicolas Binder
Deposited On:19 Jun 2017 15:41

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