The diode array velocimeter

dc.contributor.authorSmith, Edward J.en
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2014-03-14T21:45:46Zen
dc.date.adate2009-09-12en
dc.date.available2014-03-14T21:45:46Zen
dc.date.issued1992en
dc.date.rdate2009-09-12en
dc.date.sdate2009-09-12en
dc.description.abstractA novel, point measurement, proof-of-concept laser velocimeter has been developed and tested. The diode array velocimeter (DAV) uses a single laser beam for its probe. The DAV measures velocity within a seeded, transparent medium by timing the passage of a seed particle’s image across an array of PIN photodiodes. This prototype device can measure one component of mean velocity as well as one component of time-averaged turbulence intensity. The concept for the DAV is rather simple. It also has an advantage over existing laser velocimeters in that it is relatively inexpensive. Measurements made with the prototype DAV are compared to those made by a single hot-wire anemometer in a turbulent wall bounded flow with a freestream velocity of 10 m/s. The prototype DAV was found to be accurate to within 10% of U<sub>e</sub> in mean velocity, and within 1.5% of U<sub>e</sub> in turbulence intensity. The prototype DAV can measure mean velocities as great as 60 m/s. It has the potential for making measurements in highly turbulent reversing flows.en
dc.description.degreeMaster of Scienceen
dc.format.extentxv, 120 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09122009-040337en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09122009-040337/en
dc.identifier.urihttp://hdl.handle.net/10919/44746en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1992.S658.pdfen
dc.relation.isformatofOCLC# 26487381en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1992.S658en
dc.subject.lcshDiodesen
dc.subject.lcshLaser Doppler velocimeteren
dc.titleThe diode array velocimeteren
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineAerospace and Ocean Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen
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