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Generic Properties of Flows in Low-Speed Axial Fans Operating at Load-Controlled Windmill

Ortolan, Aurélie and Courty-Audren, Suk-Kee and Lagha, Massyl and Binder, Nicolas and Carbonneau, Xavier and Challas, Florent Generic Properties of Flows in Low-Speed Axial Fans Operating at Load-Controlled Windmill. (2018) Journal of Turbomachinery, 140 (8). 1-9. ISSN 0889-504X

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Official URL: http://doi.org/10.1115/1.4040678

Abstract

This paper aims at underlining the existence of some generic properties of windmilling flows, partially spread in the literature but never clearly stated. Two kinds of axial machines are investigated from compressor mode to highly loaded windmill: a conventional fan with poor turbine performance and an optimized fan able to reach high efficiencies in both compressor and windmilling operations. Both simulations and experiments are used to perform the analysis. Three particular behaviours were identified as typical of fans operating at windmill: the inverse stacking of the speed lines visible in (P, Qm) turbine maps, the appearance of a slope change on the loading-to-flow coefficient diagram at windmill and a threshold effect occurring at highly loaded windmill.

Item Type:Article
Audience (journal):International peer-reviewed journal
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:31 Jul 2018 15:52

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