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dc.contributor.authorGehlert, Pascalen
dc.contributor.authorBabinsky, Holgeren
dc.date.accessioned2020-10-06T23:30:35Z
dc.date.available2020-10-06T23:30:35Z
dc.identifier.issn0001-1452
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/311158
dc.description.abstractThe origin of the noncirculatory force arising during a cylinder sharp-edged gust encounter is investigated experimentally at a Reynolds number of 6000. Planar particle image velocimetry and force balance measurements are employed simultaneously to assess the response of a translating cylinder encountering nominal gust ratios of 0.5, 1, and 1.5. Although the vortex sheet distribution, which represents the boundary-layer vorticity, agrees with that calculated following Küssner’s potential flow approach for a sharp-edged transverse gust, it was found that the sheet can also be determined from the vorticity distribution in the shear layers forming the gust edges. Furthermore, it is found that the noncirculatory force calculated using Küssner’s model is an overestimate because the implicit assumption of rigid gust shear layers leads to an unphysical additional momentum change as a body of volume enters the gust regime. A volume correction is therefore proposed. In addition, it is found that the gust shear layer width and deformation have a noticeable effect on the unsteady noncirculatory force development, which reduces the applicability of Küssner’s method for large gust ratios and objects with considerable volume.
dc.description.sponsorshipThe authors would like to acknowledge the Engineering and Physical Science Research Council for providing financial support, EP/M508007/1 and EP/N509620/1.
dc.publisherAmerican Institute of Aeronautics and Astronautics
dc.rightsAll rights reserved
dc.rights.uri
dc.titleNoncirculatory Force on a Finite Thickness Body Encountering a Gusten
dc.typeArticle
prism.publicationNameAIAA Journalen
dc.identifier.doi10.17863/CAM.58250
dcterms.dateAccepted2020-09-01en
rioxxterms.versionofrecord10.2514/1.J059686en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-09-01en
dc.contributor.orcidGehlert, Pascal [0000-0001-9825-6423]
dc.contributor.orcidBabinsky, Holger [0000-0002-7647-7126]
dc.identifier.eissn1533-385X
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/M508007/1)
pubs.funder-project-idEPSRC (EP/N509620/1)
pubs.funder-project-idEPSRC (EP/N509620/1)
cam.issuedOnline2020-10-15en
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.58231
cam.orpheus.successMon Dec 07 07:31:11 GMT 2020 - Embargo updated*
cam.orpheus.counter13*
rioxxterms.freetoread.startdate2020-10-15


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