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dc.contributor.advisorBogard, David G.
dc.creatorNathan, Marc Louis
dc.date.accessioned2012-02-08T22:03:57Z
dc.date.available2012-02-08T22:03:57Z
dc.date.created2011-12
dc.date.issued2012-02-08
dc.date.submittedDecember 2011
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2011-12-4867
dc.descriptiontext
dc.description.abstractTwo sets of experiments were performed on a simulated turbine nozzle guide vane. First, adiabatic and overall effectiveness measurements were taken in the showerhead region of the vane using adiabatic and matched Biot vane models, respectively. Measurements of overall effectiveness in the showerhead region are not found in the literature, and are a useful baseline for validating the results of computational fluid dynamics (CFD) simulations. Overall effectiveness is useful because it shows the results of combining film cooling, internal convection, and surface conduction to provide a more complete picture of vane cooling than adiabatic effectiveness. An impingement plate was utilized to generate internal jet cooling. Momentum flux ratios were matched between the models and ranged from I*SH = 0.76 to 6.70, based on showerhead upstream approach velocity. The second set of experiments used a different model to examine the effects of surface curvature on adiabatic effectiveness. Results in open literature are found by varying the radius of curvature of a fixed setup, so the current approach was novel in that it looked at adiabatic effectiveness at locations of various curvature around the same vane. Blowing ratios from M = 0.4 to M = 1.6 were tested at a density ratio of DR = 1.20 for two locations on the suction side of the vane. Results were presented in terms of laterally averaged adiabatic effectiveness and contour plots of adiabatic effectiveness, and were compared to literature.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.subjectFilm cooling
dc.subjectConjugate heat transfer
dc.subjectAdiabatic effectiveness
dc.subjectOverall effectiveness
dc.subjectShowerhead
dc.subjectSurface curvature
dc.titleAdiabatic and overall effectiveness in the showerhead of a film cooled turbine vane and effects of surface curvature on adiabatic effectiveness
dc.date.updated2012-02-08T22:04:20Z
dc.identifier.slug2152/ETD-UT-2011-12-4867
dc.description.departmentMechanical Engineering
dc.type.genrethesis*
thesis.degree.departmentMechanical Engineering
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorUniversity of Texas at Austin
thesis.degree.levelMasters
thesis.degree.nameMaster of Science in Engineering


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