Generating axial compressor maps to zero speed

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dc.contributor.authorFerrer-Vidal, Luis E.
dc.contributor.authorPachidis, Vassilios
dc.contributor.authorTunstall, Richard J.
dc.date.accessioned2020-12-09T16:23:39Z
dc.date.available2020-12-09T16:23:39Z
dc.date.issued2020-12-06
dc.description.abstractGas turbine performance models typically rely on component maps to characterize engine component performance throughout the operational regime. For the sub-idle case, the lack of reliable rig test data or inability to run design codes far from design conditions entails that component maps have to be generated from the extrapolation of existing data at higher speeds. This undermines the accuracy of whole-engine sub-idle performance models, at times impacting engine development and certification of aviation engines and the accuracy of start-up performance prediction in industrial gas turbines. One of the main components driving this issue is the core compression system, which can present operability concerns during light-up and which also sets the combustor airflow required for ignition. This paper presents, discusses, and draws on previous approaches to describe a method enabling the creation of sub-idle compressor maps from analytical and physical grounds. The method relies on the calculation of zero-speed and torque-free lines to generate a map down to zero speed along with analytical interpolation. A method for the interpolation process is described. A sensitivity study is carried out to assess the effects that different elements of the map generation process may have on the accuracy of the resulting performance calculation. Overall, a method for the generation of accurate, consistent maps from limited geometry data is identified.en_UK
dc.description.sponsorshipEuropean Union: Horizon 2020 Clean Sky 2 Joint Undertaking
dc.identifier.citationFerrer-Vidal LE, Pachidis V, Tunstall RJ. (2020) Generating axial compressor maps to zero speed. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, Available online 06 December 2020en_UK
dc.identifier.issn0957-6509
dc.identifier.urihttps://doi.org/10.1177/0957650920976052
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16071
dc.language.isoenen_UK
dc.publisherSAGEen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectAir-breathing enginesen_UK
dc.subjectaxial-flow compressorsen_UK
dc.subjectcompressor performanceen_UK
dc.subjectgas turbine performanceen_UK
dc.titleGenerating axial compressor maps to zero speeden_UK
dc.typeArticleen_UK

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