Extending highly loaded axial fan operability range through novel blade design

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dc.contributor.authorLopez, Diego I.
dc.contributor.authorGhisu, Tiziano
dc.contributor.authorKipouros, Timoleon
dc.contributor.authorShahpar, Shahrokh
dc.contributor.authorWilson, Mark
dc.date.accessioned2022-10-13T15:25:09Z
dc.date.available2022-10-13T15:25:09Z
dc.date.issued2022-09-19
dc.description.abstractThe tip clearance size has historically been considered to be the main factor affecting stability range in axial fan and compressors. This paper reveals that the stall characteristics are defined by the axial momentum flux of the tip leakage flow and that tip clearance is primarily a strong driver for this metric. A bespoke methodology for carefully tailoring the axial momentum via three-dimensional design is presented, which enables a higher degree of control over the stability range for cases where the tip clearance responds to other considerations and cannot be defined for this purpose. The effect of the axial momentum on efficiency is also addressed and the trade-off between operability range and design point performance is derived. The results show that the conditions for optimal stability differ from those for optimal efficiency and that control over the axial momentum enables tuning the design for a desired exchange. Numerical simulations have been employed to drive the analysis through a high-fidelity computational model whose behavior is supported by rich set of experimental data. Contrary to current belief, results further indicate that an accurate characterization of stall, including onset mechanism, can be achieved through steady-state simulations, minimizing the need for expensive time-accurate computations during the design phase.en_UK
dc.identifier.citationLopez DI, Ghisu T, Kipouros T, et al., (2022) Extending highly loaded axial fan operability range through novel blade design. Journal of Turbomachinery, Volume 144, Issue 12, December 2022, Article number 121009en_UK
dc.identifier.issn0889-504X
dc.identifier.urihttps://doi.org/10.1115/1.4055350
dc.identifier.urihttps://asmedigitalcollection.asme.org/turbomachinery/article/144/12/121009/1145720/Extending-Highly-Loaded-Axial-Fan-Operability
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18559
dc.language.isoenen_UK
dc.publisherAmerican Society of Mechanical Engineersen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectcompressor stallen_UK
dc.subjectsurge and operabilityen_UK
dc.subjectcomputational fluid dynamics (CFD)en_UK
dc.subjectaxial fan and compressor aerodynamic designen_UK
dc.subjectturbomachinery blading designen_UK
dc.titleExtending highly loaded axial fan operability range through novel blade designen_UK
dc.typeArticleen_UK

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