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dc.contributor.advisorPlatzer, Max F.
dc.contributor.advisorChandrasekhara, M.S
dc.contributor.authorVan Dyken, Robert D.
dc.date.accessioned2012-08-09T19:20:25Z
dc.date.available2012-08-09T19:20:25Z
dc.date.issued1997-03
dc.identifier.urihttp://hdl.handle.net/10945/8365
dc.descriptionApproved for public release; distribution is unlimiteden_US
dc.description.abstractIn this thesis, the separation bubble behavior and its effect on the steady and dynamic stall characteristics of a thin airfoil in a compressible flow at a transitional Reynolds number was studied. For such flows, laminar separation occurs near the airfoil leading edge, but turbulent reattachment occurs within a short distance downstream, forming a separation bubble in the underlying region. Two experimental techniques, point diffraction interferometry (PDI) and laser doppler velocimetry (LDV), were used to acquire detailed flowfield information that showed the development of the leading-edge separation bubble and its subsequent bursting at higher angles of attack. The initiation of the stall process from the leading-edge separation bubble as opposed to trailing-edge flow reversal pointed to the need for transitional flow analysis. Both in the boundary layer and Reynolds-averaged, Navier-Stokes (N-S) analysis methods, transition models were incorporated to determine the location and extent of the transition zone that best modeled the measured separation bubble behavior. Computed results for steady flow gave remarkable agreement with the measurementsen_US
dc.description.urihttp://archive.org/details/experimentalcomp00vand
dc.format.extentxxi, 180 p.;28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.subject.lcshVORTEX SHEDDINGen_US
dc.titleExperimental and computational analysis of separation bubble behavior for compressible, steady and oscillatory flows over a NACA 0012 airfoil at M=0.3 and a reynolds number of 540,000.en_US
dc.typeThesisen_US
dc.description.serviceAeronautical Engineer, Naval Air Warfare Center, Weapons Divisionen_US
etd.thesisdegree.namePh.D. in Aeronautical engineeringen_US
etd.thesisdegree.levelDoctoralen_US
etd.thesisdegree.disciplineAeronautical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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