Scale effects on the performance of sawtooth spoilers in transonic rectangular cavity flow

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dc.contributor.authorSaddington, A. J.
dc.contributor.authorKnowles, Kevin
dc.contributor.authorThangamani, Varun
dc.date.accessioned2019-11-29T15:36:33Z
dc.date.available2019-11-29T15:36:33Z
dc.date.issued2015-12-11
dc.description.abstractAn experimental study was conducted on the effectiveness of sawtooth spoilers at suppressing acoustic tones within a rectangular cavity with a length-to-depth ratio of five and a width-to-depth ratio of two, operating at a freestream Mach number of 0.71. Whereas previous research has focussed on the ratio of spoiler height to boundary-layer thickness (h/δ), this study also considers the effect of the ratio of cavity length to boundary-layer thickness (L/δ). Using a combination of unsteady pressure measurements and particle image velocimetry, it was established that consideration of the magnitude of both parameters is important when designing passive control methods for transonic cavities. A correlation was developed which suggests that in order to suppress fully the cavity tones, a critical spoiler height, h cr, is defined such that h cr/δ = 0.065 ≤ L/δ ≤ 0.082.en_UK
dc.identifier.citationSaddington A, Knowles K, Thangamani V. (2016) Scale effects on the performance of sawtooth spoilers in transonic rectangular cavity flow. Experiments in Fluids, Volume 57, Issue 2, January 2016, Article Number 2en_UK
dc.identifier.cris4090465
dc.identifier.issn0723-4864
dc.identifier.urihttps://doi.org/10.1007/s00348-015-2088-2
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14785
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectParticle Image Velocimetryen_UK
dc.subjectShear Layeren_UK
dc.subjectParticle Image Velocimetry Measurementen_UK
dc.subjectBroadband Noiseen_UK
dc.subjectParticle Image Velocimetry Dataen_UK
dc.titleScale effects on the performance of sawtooth spoilers in transonic rectangular cavity flowen_UK
dc.typeArticleen_UK

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