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dc.contributor.authorCostis, Christopher E.en
dc.date.accessioned2017-01-30T21:02:18Zen
dc.date.available2017-01-30T21:02:18Zen
dc.date.issued1982en
dc.identifier.urihttp://hdl.handle.net/10919/74471en
dc.description.abstractA study on the behaviour of wave-packets and random disturbances, introduced by the vibrating-ribbon technique in a Blasius boundary layer, is presented. The experiments were conducted in the VPI & SU low turbulence wind tunnel. The flat plate model was constructed from an aluminum-paper honeycomb laminate and an aluminum leading edge with an elliptical profile. A theoretical model was developed to verify the random and step-function-form motion of the vibrating ribbon. In the case of random disturbance introduction it was found that the random disturbances behave like infinite number, single-frequency waves and measurements of their growth made possible to verify regions of the neutral-stability curve. In the case of wave-packet creation it was found that the wave packets behave like a structure that consists of waves of certain frequencies that grow or decay not necessarily according to the stability curve but in that way as to maintain the wave-packet structure. Their growth as they move downstream and their quick destruction into turbulence was compared to previously published data.en
dc.format.extentiv, 108, [1] leavesen
dc.format.mimetypeapplication/pdfen
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 8890665en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1982.C677en
dc.subject.lcshTransition flowen
dc.subject.lcshTurbulent boundary layeren
dc.subject.lcshWave mechanicsen
dc.titleExcitation of wave packets and random disturbances in a boundary layeren
dc.typeThesisen
dc.contributor.departmentEngineering Mechanicsen
dc.description.degreeMaster of Scienceen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelmastersen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineEngineering Mechanicsen
dc.type.dcmitypeTexten


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