Effect of unsteady fan-intake interaction on short intake design

Simple item page
dc.contributor.authorBoscagli, Luca
dc.contributor.authorMacManus, David G.
dc.contributor.authorChristie, Robert
dc.contributor.authorSheaf, Christopher T.
dc.date.accessioned2023-10-17T08:52:40Z
dc.date.available2023-10-17T08:52:40Z
dc.date.issued2023-10-13
dc.description.abstractThe next generation of ultra-high bypass ratio civil aero-engines promises notable engine cycle benefits. However, these benefits can be significantly eroded by a possible increase in nacelle weight and drag due to the typical larger fan diameters. More compact nacelles, with shorter intakes, may be required to enable a net reduction in aero-engine fuel burn. The aim of this paper is to assess the influence of the design style of short intakes on the unsteady interaction under crosswind conditions between fan and intake, with a focus on the separation onset and characteristics of the boundary layer within the intake. Three intake designs were assessed and a hierarchical computational fluid dynamics approach was used to determine and quantify primary aerodynamic interactions between the fan and the intake design. Similar to previous findings for a specific intake configuration, both intake flow unsteadiness and the unsteady upstream perturbations from the fan have a detrimental effect on the separation onset for the range of intake designs. The separation of the boundary layer within the intake was shock driven for the three different design styles. The simulations also quantified the unsteady intake flows with an emphasis on the spectral characteristics and engine-order signatures of the flow distortion. Overall, this work showed that is beneficial for the intake boundary layer to delay the diffusion closer to the fan and reduce the pre-shock Mach number to mitigate the adverse unsteady interaction between the fan and the shock.en_UK
dc.identifier.citationBoscagli L, MacManus DG, Christie R, Sheaf CTJ. (2023) Effect of unsteady fan-intake interaction on short intake design. Journal of Engineering for Gas Turbines and Power, Volume 146, Issue 3, March 2024, Article number 031008, Paper number GTP-23-1195en_UK
dc.identifier.issn0742-4795
dc.identifier.urihttps://doi.org/10.1115/1.4063768
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20381
dc.language.isoenen_UK
dc.publisherAmerican Society of Mechanical Engineersen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleEffect of unsteady fan-intake interaction on short intake designen_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Effect_of_unsteady_fan-intake_interaction-2023.pdf
Size:
5.37 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SATM)