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

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dc.contributor.author Saddington, Alistair J.
dc.contributor.author Knowles, Kevin
dc.contributor.author Thangamani, V.
dc.date.accessioned 2019-11-29T15:36:33Z
dc.date.available 2019-11-29T15:36:33Z
dc.date.issued 2015-12-11
dc.identifier.citation Saddington A, Knowles K, Thangamani V. Scale effects on the performance of sawtooth spoilers in transonic rectangular cavity flow. Experiments in Fluids, Volume 57, Issue 2, January 2016, pp. 1-12 en_UK
dc.identifier.issn 0723-4864
dc.identifier.uri https://doi.org/10.1007/s00348-015-2088-2
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/14785
dc.description.abstract An 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.language.iso en en_UK
dc.publisher Springer en_UK
dc.rights Attribution 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ *
dc.subject Particle Image Velocimetry en_UK
dc.subject Shear Layer en_UK
dc.subject Particle Image Velocimetry Measurement en_UK
dc.subject Broadband Noise en_UK
dc.subject Particle Image Velocimetry Data en_UK
dc.title Scale effects on the performance of sawtooth spoilers in transonic rectangular cavity flow en_UK
dc.type Article en_UK


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