Full-aircraft energy-based force decomposition applied to boundary layer ingestion

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dc.contributor.authorSanders, Drewan S.
dc.contributor.authorLaskaridis, Panagiotis
dc.date.accessioned2020-09-16T11:55:53Z
dc.date.available2020-09-16T11:55:53Z
dc.date.issued2020-09-11
dc.description.abstractThis paper introduces a generic force decomposition method derived from mechanical energy conservation. A transformation from relative to absolute reference frame captures the power transfer from pressure and skin-friction forces on aircraft surfaces to mechanisms in the flow-field . A unique flow-feature extraction procedure isolates these mechanisms into different regions including the jet-plume substructures, as well as shocks and shear-layers located externally to the jet. Featured is a novel shear-layer identification metric that captures both laminar and turbulent regions. The resulting energy balance is rearranged into a force decomposition formulation with contributions attributed to shocks, jets, lift induced vortices and the remaining wake. Boundary layer ingestion is used to demonstrate the method where a Potential for Energy Recovery factor is introduced and defines the amount of energy available at the trailing edge of an unpowered body. CFD results of a fuselage suggest 10% of its drag power is available for re-utilisation. CFD studies of a boundary layer ingesting propulsor show local minima in power consumption at a given thrust-split for particular combinations of fan pressure ratio and amount of boundary layer ingested. A noteworthy finding reveals significant contributions of volumetric pressure work, a term often neglected in previous worken_UK
dc.identifier.citationSanders DS, Laskaridis P. (2020) Full-aircraft energy-based force decomposition applied to boundary layer ingestion. AIAA Journal, Available online 11 September 2020en_UK
dc.identifier.issn0001-1452
dc.identifier.urihttps://doi.org/10.2514/1.J058695
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15806
dc.language.isoenen_UK
dc.publisherAmerican Institute of Aeronautics and Astronauticsen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.titleFull-aircraft energy-based force decomposition applied to boundary layer ingestionen_UK
dc.typeArticleen_UK

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