Aspirating probes for measurement of mean concentration and fluctuating quantities in supersonic air/helium shear layer

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dc.contributor.authorNinnemann, Todd A.en
dc.contributor.committeechairNg, Wing Faien
dc.contributor.committeememberRoe, Larry A.en
dc.contributor.committeememberSchetz, Joseph A.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T20:50:43Zen
dc.date.adate2009-12-23en
dc.date.available2014-03-14T20:50:43Zen
dc.date.issued1990-12-31en
dc.date.rdate2012-03-09en
dc.date.sdate2009-12-23en
dc.description.abstractTwo aspirating hot-film probes are developed to make measurements in supersonic air/helium shear layers. The first probe is designed to measure local mean gas composition and is referred to as the mean concentration probe. This probe consists of a constant temperature hot-film sensor operating in a channel with a choked exit. The flow over the hot-fifm is influenced only by total temperature, total pressure, and gas composition. The mean probe is easily calibrated and shows acceptable sensitivity to flow angularity. The second probe is based on an improved design of the mean concentration probe. In addition to measuring mean composition, this second probe also measures turbulence intensities of Reynolds number and thermal conductivity using a multiple overheat method. This probe is referred to as the turbulent probe. Both probes are used in the study of supersonic air/helium mixing layers in the VPI&SU 23 cmx23 cm Supersonic Wind Tunnel. Profiles of mean and turbulent quantities are presented.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 63 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-12232009-020346en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12232009-020346/en
dc.identifier.urihttp://hdl.handle.net/10919/36423en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1990.N577.pdfen
dc.relation.isformatofOCLC# 23663421en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1990.N577en
dc.subject.lcshAerodynamics, Supersonicen
dc.subject.lcshSupersonic wind tunnelsen
dc.titleAspirating probes for measurement of mean concentration and fluctuating quantities in supersonic air/helium shear layeren
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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