Jets in a crossflow including the effects of dual arrangements, angle, shape, swirl and high turbulence

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dc.contributor.authorKavsaoglu, Mehmet Serifen
dc.contributor.committeechairSchetz, Joseph A.en
dc.contributor.committeememberJakubowski, A. K.en
dc.contributor.committeememberNeu, Wayne L.en
dc.contributor.committeememberO'Brien, Walter F. Jr.en
dc.contributor.committeememberGrossman, Bernard M.en
dc.contributor.departmentAerospace Engineeringen
dc.date.accessioned2014-08-13T14:38:28Zen
dc.date.available2014-08-13T14:38:28Zen
dc.date.issued1986en
dc.description.abstractIn this experimental research, jets injected from a flat plate into a crossflow at large angles have been studied. Results were obtained as surface pressure distributions and mean velocity vector plots and turbulence intensities and Reynolds stresses in the jet plume. Rectangular jets (length/width=4) and circular jets were tested. The rectangular jets were aligned streamwise as single and side-by-side dual jets. For the rectangular jets, the jet injection angles were 90° and 60°. The circular jet results were obtained for a single circular jet injected at a 90° angle. Different types of the circular jets were studied with low exit turbulence, high exit turbulence, 40 % swirl and 58 % swirl. The surface pressure distribution results were obtained for jet to freestream velocity ratios of 2.2, 4 and 8 for most of the cases mentioned. Mean velocity vector plots were obtained for the 90° and 60° side-by-side dual rectangular jets and all the circular jet types, mainly for the jet to freestream velocity ratio of 4. Turbulence results were obtained for a jet to freestream velocity ratio of 4 for the 90° and 60° side-by-side dual rectangular jets and for the circular jet with low exit turbulence cases. The results showed that the higher exit turbulence reduced the penetration height, and it also reduced the surface area influenced by the negative pressures. The swirl caused asymmetric pressure distributions, and the swirl effects were more pronounced for lower velocity ratios. The rectangular jets featured strong negative pressure peaks near the front nozzle corners. The 60° rectangular jets produced lower magnitude negative pressures which are distributed over a lesser area when compared to the 90° rectangular jets.en
dc.description.adminincomplete_metadataen
dc.description.degreePh. D.en
dc.format.extentxviii, 274 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/49807en
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 15788204en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1986.K397en
dc.subject.lcshJets -- Researchen
dc.subject.lcshTurbulenceen
dc.titleJets in a crossflow including the effects of dual arrangements, angle, shape, swirl and high turbulenceen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineAerospace Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en
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