Analytical method for turbine blade temperature mapping to estimate a pyrometer input signal

dc.contributor.authorMacKay, James D.en
dc.contributor.committeechairO'Brien, Walter F. Jr.en
dc.contributor.committeememberMoses, Hal L.en
dc.contributor.committeememberWood, Henry L.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:49:56Zen
dc.date.adate2012-11-17en
dc.date.available2014-03-14T21:49:56Zen
dc.date.issued1987-05-05en
dc.date.rdate2012-11-17en
dc.date.sdate2012-11-17en
dc.description.abstractThe purpose of this thesis is to develop a method to estimate local blade temperatures in a gas turbine for comparison with the output signal of an experimental pyrometer. The goal of the method is to provide a temperature measurement benchmark based on a knowledge of blade geometry and engine operating conditions. A survey of currently available methods is discussed including both experimental and analytical techniques.The purpose of this thesis is to develop a method to estimate local blade temperatures in a gas turbine for comparison with the output signal of an experimental pyrometer. The goal of the method is to provide a temperature measurement benchmark based on a knowledge of blade geometry and engine operating conditions. A survey of currently available methods is discussed including both experimental and analytical techniques. An analytical approach is presented as an example, using the output from a cascade flow solver to estimate local blade temperatures from local flow conditions. With the local blade temperatures, a grid is constructed which maps the temperatures onto the blade. A predicted pyrometer trace path is then used to interpolate temperature values from the grid, predicting the temperature history a pyrometer would record as the blade rotates through the pyrometer line of sight. Plotting the temperature history models a pyrometer input signal. An analytical approach is presented as an example, using the output from a cascade flow solver to estimate local blade temperatures from local flow conditions. With the local blade temperatures, a grid is constructed which maps the temperatures onto the blade. A predicted pyrometer trace path is then used to interpolate temperature values from the grid, predicting the temperature history a pyrometer would record as the blade rotates through the pyrometer line of sight. Plotting the temperature history models a pyrometer input signal.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 70 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11172012-040210en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11172012-040210/en
dc.identifier.urihttp://hdl.handle.net/10919/45797en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1987.M334.pdfen
dc.relation.isformatofOCLC# 16817921en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1987.M334en
dc.subject.lcshAerothermodynamicsen
dc.subject.lcshRadiation pyrometersen
dc.subject.lcshTurbines -- Bladesen
dc.titleAnalytical method for turbine blade temperature mapping to estimate a pyrometer input signalen
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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