Measurements of pressure and thermal wakes in a transonic turbine cascade

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dc.contributor.authorMezynski, Alexisen
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:37:54Zen
dc.date.adate2009-06-11en
dc.date.available2014-03-14T21:37:54Zen
dc.date.issued1994en
dc.date.rdate2009-06-11en
dc.date.sdate2009-06-11en
dc.description.abstractThe effects of freestream turbulence on the total pressure and total temperature in the wake of a cooled transonic turbine cascade with heated flow are presented in this thesis. The experiment was conducted in the Virginia Tech Cascade Wind Tunnel. A dual hot wire aspirating probe was used to make high frequency, unsteady total pressure and temperature measurements. The probe design was modified to be used in a high temperature environment. The flow was heated to temperatures exceeding 140°C and the turbine blades were actively cooled using gaseous nitrogen to maintain a gas to blade temperature ratio between 1.3 and 1.4. A turbulence screen was used to change the freestream turbulence from 3.3% to 7.5%. Mean and turbulent total pressure and temperature quantities are presented. The higher freestream turbulence resulted in lower total pressure and total temperature turbulence intensities in the wakes of the turbine blades. The freestream turbulence level had no measurable effect on the blade losses.en
dc.description.degreeMaster of Scienceen
dc.format.extentxii, 59 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06112009-063252en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06112009-063252/en
dc.identifier.urihttp://hdl.handle.net/10919/43142en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.M499.pdfen
dc.relation.isformatofOCLC# 31298246en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.M499en
dc.subject.lcshAerodynamics, Transonicen
dc.subject.lcshCascades (Fluid dynamics)en
dc.subject.lcshTurbines -- Aerodynamicsen
dc.titleMeasurements of pressure and thermal wakes 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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