Multi-fidelity assessment of exhaust systems for complete engine-airframe integrations

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dc.contributor.authorHueso Rebassa, Josep
dc.contributor.authorTejero, Fernando
dc.contributor.authorOtter, John J.
dc.contributor.authorGoulos, Ioannis
dc.contributor.authorMacManus, David G.
dc.date.accessioned2020-03-16T15:29:41Z
dc.date.available2020-03-16T15:29:41Z
dc.date.issued2020-02-28
dc.description.abstractFor podded underwing configurations, the goal of specific fuel consumption reduction has led to engine designs with larger fan diameters and higher bypass ratios to increase propulsive efficiency. As a consequence of this trend, the aerodynamic interference with the airframe is increased. Non-axisymmetric exhaust geometries could minimise such interference for coupled configurations. Class Shape Transformation functions are used to define 3D podded engine geometries that are installed on a transonic aircraft configuration. The complete system is assessed at mid-cruise conditions of a representative long-range cruise operation. The assessment is conducted by multi-fidelity computational fluid dynamics computations that are Euler inviscid and Reynolds Averaged Navier Stokes turbulent methods. The correlation between the different fidelities is analysed and a multi-fidelity co-kriging model is developed. The model is applied to predict the behaviour of installed non-axisymmetric exhaust systems and results into a 33% computational benefit compared to single-fidelity surrogates.en_UK
dc.identifier.citationHueso-Rebassa J, Tejero F, Otter J, et al., (2020) Multi-fidelity assessment of exhaust systems for complete engine-airframe integrations. Proceedings of Aerospace Europe Conference 2020 (AEC2020), 24-28 February 2020, Bordeaux, France. Paper number 00337en_UK
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15286
dc.language.isoenen_UK
dc.publisherUnknownen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectComplete aircraft assessmenten_UK
dc.subjectinstalled performanceen_UK
dc.subjectnon-axisymmetric exhaust systemsen_UK
dc.subjectmulti-fidelity analysisen_UK
dc.subjectco-krigingen_UK
dc.titleMulti-fidelity assessment of exhaust systems for complete engine-airframe integrationsen_UK
dc.typeConference paperen_UK

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