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Effects of shock wave passing on turbine blade heat transfer in a transonic turbine cascade

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dc.contributor.authorNix, Andrew Carlen
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:43:18Zen
dc.date.adate2008-08-22en
dc.date.available2014-03-14T21:43:18Zen
dc.date.issued1996en
dc.date.rdate2008-08-22en
dc.date.sdate2008-08-22en
dc.description.abstractThe effects of a shock wave passing through a blade passage on surface heat transfer to turbine blades were measured experimentally. The experiments were performed in a transonic linear cascade which matched engine Reynolds number, Mach number, and shock strength. Unsteady heat flux measurements were made with Heat Flux Microsensors on both the pressure and suction surfaces of a single blade passage. Unsteady static pressure measurements were made using Kulite pressure transducers on the blade surface and end walls of the cascade. The experiments were conducted in a stationary linear cascade of blades with heated transonic air flow using a shock tube to introduce shock waves into the cascade. A time-resolved model based on conduction in the gas was found to accurately predict heat transfer due to shock heating measured during experimental tests without flow. The model under-predicted the experimental results with flow, however, by a factor of three. The heat transfer increase resulting from shock passing in heated flow averaged over 200 its (typical blade passing period) was found to be a maximum of 60% on the pressure surface near the leading edge. Based on experimental results at different flow temperatures, it was determined that shock heating has the primary effect on heat transfer, while heat transfer increase due to boundary layer disturbance is small.en
dc.description.degreeMaster of Scienceen
dc.format.extentxviii, 267 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-08222008-063734en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08222008-063734/en
dc.identifier.urihttp://hdl.handle.net/10919/44360en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1996.N59.pdfen
dc.relation.isformatofOCLC# 36801844en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectshock waveen
dc.subjectturbineen
dc.subjectHeat--Transmissionen
dc.subjecttransonic cascadeen
dc.subject.lccLD5655.V855 1996.N59en
dc.titleEffects of shock wave passing on turbine blade heat transfer in a transonic turbine cascadeen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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