Design of a quasi-2D rig configuration to assess nacelle aerodynamics under windmilling conditions

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dc.contributor.authorBoscagli, Luca
dc.contributor.authorTejero, Fernando
dc.contributor.authorSwarthout, Avery
dc.contributor.authorMacManus, David G.
dc.contributor.authorSabnis, Kshitij
dc.contributor.authorBabinsky, Holger
dc.contributor.authorSheaf, Christopher T.
dc.date.accessioned2023-06-21T10:53:44Z
dc.date.available2023-06-21T10:53:44Z
dc.date.issued2023-06-08
dc.description.abstractAero-engine nacelles are typically designed to fulfil both design and off-design aircraft manoeuvres. Under-off design conditions one of the objective is to avoid large flow separation either on the external cowl or within the intake that can influence aircraft and engine operability. One particular scenario is represented by a low engine mass flow regime associated with one inoperative engine, also known as a windmilling condition. Under windmilling, the boundary layer on the external cowl of the nacelle can separate either due to the interaction with shockwaves or due to notable adverse pressure gradient towards the trailing edge. Both mechanisms are computationally difficult to model and there is a need for more validation of computational fluid dynamics (CFD) methods. The aim of this work is to develop a rig configuration which will provide CFD validation data for the aerodynamics of a nacelle under representative windmilling conditions. Two flight regimes are considered, namely windmilling diversion and end-of-runway. CFD simulations of a 3D nacelle are used to determine primary aerodynamic mechanisms associated with boundary layer separation. Two rig configurations are developed and both 2D and 3D CFD analyses are used to achieve the design objectives. Overall, this work presents the design philosophy and methods that were pursued to develop a quasi-2D rig configuration representative of the aerodynamics of 3D-annular aero-engine nacelles under windmilling conditions.en_UK
dc.description.sponsorshipEuropean Union funding: 101007598en_UK
dc.identifier.citationBoscagli L, Tejero F, Swarthout AE, et al., (2023) Design of a quasi-2D rig configuration to assess nacelle aerodynamics under windmilling conditions. In: 2023 AIAA Aviation and Aeronautics Forum and Exposition (AIAA AVIATION Forum), 12-16 June 2023, San Diego, CAen_UK
dc.identifier.eisbn978-1-62410-704-7
dc.identifier.urihttps://doi.org/10.2514/6.2023-3392
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19825
dc.language.isoenen_UK
dc.publisherAIAAen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.titleDesign of a quasi-2D rig configuration to assess nacelle aerodynamics under windmilling conditionsen_UK
dc.typeConference paperen_UK

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