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An analytical parameter study on the erosion of turbine blades subjected to flow containing particulates

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dc.contributor.authorDubberley, Dennis Johnen
dc.contributor.committeechairO'Brien, Walter F. Jr.en
dc.contributor.committeememberMoses, Hal L.en
dc.contributor.committeememberEiss, Norman S. Jr.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:38:20Zen
dc.date.adate2010-06-12en
dc.date.available2014-03-14T21:38:20Zen
dc.date.issued1977-07-05en
dc.date.rdate2010-06-12en
dc.date.sdate2010-06-12en
dc.description.abstractThe erosion damage to stator and rotor blades associated with flow containing particulates in turbines is investigated. The main parameters studied are blade leading edge thickness, blade turning angle, turbine inlet temperature, particle size, and particle densities. The computer programs used in the investigation are based on inviscid flow theory. Flow velocities relative to blades ranged up to sonic values. Results predict that decreasing flow turning angles and increasing blade leading edge thicknesses are the most effective ways to reduce erosion damage caused by impacting particles. Decreasing particle sizes and densities can also significantly reduce erosion rates. The erosion model uses the brittle and ductile mode response exhibited by materials subjected to particle impacts to predict the total erosion damage. The accuracy for small (1 micron) particles is questionable since some of these particles will have long residence times in the boundary layers, causing deposition rather than erosion.en
dc.description.degreeMaster of Scienceen
dc.format.extentxiv, 138 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06122010-020224en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06122010-020224/en
dc.identifier.urihttp://hdl.handle.net/10919/43238en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1977.D82.pdfen
dc.relation.isformatofOCLC# 39802532en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectgas turbinesen
dc.subjectcoalen
dc.subject.lccLD5655.V855 1977.D82en
dc.titleAn analytical parameter study on the erosion of turbine blades subjected to flow containing particulatesen
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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