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Experimental and numerical flow analysis of low-speed fans at highly loaded windmilling conditions

Ortolan, Aurélie and Courty-Audren, Suk-Kee and Binder, Nicolas and Carbonneau, Xavier and Challas, Florent Experimental and numerical flow analysis of low-speed fans at highly loaded windmilling conditions. (2016) In: ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, 13 June 2016 - 17 June 2016 (Seoul, Korea, Republic Of).

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Official URL: https://dx.doi.org/10.1115/GT2016-56577

Abstract

This paper aims for the analysis of experimental and numerical results of windmilling flow topologies far from freewheeling condition. Two fans were investigated: a baseline design and an innovative one meant to reach good performance in both compressor and turbine modes. Experiments are conducted with global and local characterizations to determine energy recovery potential and local loss mechanisms. The numerical study is carried out with mixing plane steady simulations, the results of which are in fair agreement with experimental data. The difference of local topology between freewheeling and highly loaded windmill demonstrates that classical deviation rules such as Carter’s are not well-suited to highly loaded windmilling flows. Finally, under certain conditions, the minor influence of the stator on the rotor topology indicates that non rotating elements can be considered as loss generators.

Item Type:Conference or Workshop Item (Paper)
Additional Information:ISBN: 978-0-7918-4969-9 Copyright © 2016 by ASME
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:18 Oct 2017 08:36

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