Flow field explorations in a boundary layer pump rotor for improving 1D design codes

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dc.contributor.authorFreschi, Rosa
dc.contributor.authorBakogianni, Agapi
dc.contributor.authorRajendran, David John
dc.contributor.authorAnselmi Palma, Eduardo
dc.contributor.authorTalluri, Lorenzo
dc.contributor.authorRoumeliotis, Ioannis
dc.date.accessioned2023-02-08T10:36:21Z
dc.date.available2023-02-08T10:36:21Z
dc.date.issued2023-02-03
dc.description.abstractBoundary layer pumps, although attractive due to their compactness, robustness and multi-fluid and phase-handling capability, have been reported to have low experimental efficiencies despite optimistic predictions from analytical models. A lower-order flow-physics-based analytical model that can be used as a 1D design code for sizing and predicting pump performance is described. The rotor component is modelled by means of the Navier–Stokes equations as simplified using velocity profiles in the inter-disk gap, while the volute is modelled using kinetic-energy-based coefficients inspired by centrifugal pumps. The code can predict the rotor outlet and overall pump pressure ratio with an around 3% and 10% average error, respectively, compared to the reference experimental data for a water pump. Moreover, 3D RANS flow-field explorations of the rotor are carried out for different inter-disk gaps to provide insights concerning the improvement of the 1D design code for the better prediction of the overall pump performance. Improvements in volute loss modelling through the inclusion of realistic flow properties at the rotor outlet rather than the detailed resolution of the velocity profiles within the rotor are suggested as guidelines for improved predictions. Such improved design codes could close the gap between predictions and experimental values, thereby paving the way for the appropriate sizing of boundary layer pumps for several applications, including aircraft thermal management.en_UK
dc.identifier.citationFreschi R, Bakogianni A, Rajendran DJ, et al., (2023) Flow field explorations in a boundary layer pump rotor for improving 1D design codes, Designs, Volume 7, Issue 1, February 2023, Article number 29en_UK
dc.identifier.issn2411-9660
dc.identifier.urihttps://doi.org/10.3390/designs7010029
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19147
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectboundary layer pumpsen_UK
dc.subjectdesign codeen_UK
dc.subjectNavier–Stokesen_UK
dc.subjectvelocity profilesen_UK
dc.subjectvolute loss modellingen_UK
dc.subject3D RANSen_UK
dc.subjectinflectionen_UK
dc.titleFlow field explorations in a boundary layer pump rotor for improving 1D design codesen_UK
dc.typeArticleen_UK

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