{"id":{"repo_id":"wvu","oai_identifier":"oai:researchrepository.wvu.edu:etd-2469"},"canonical_url":"https://search.dev.ndltd.org/etd/wvu/oai:researchrepository.wvu.edu:etd-2469","repository":{"repo_id":"wvu","name":"West Virginia University","base_url":"https://researchrepository.wvu.edu/do/oai/"},"display":{"title":"Doppler global velocimetry measurements in a wing flow field with tip blowing","abstract":"A two-component Doppler global velocimetry (DGV) system has been developed, improved, and tested. DGV is a non-intrusive optical velocity measurement technique. DGV measures the Doppler shift of the frequency of the light scattered by seed particles at a specific location. The velocity of the particles is related to the Doppler shift.;DGV measurements were made in the WVU low speed wind tunnel on a turbulent jet and on a NACA 2412 airfoil model with and without tip blowing.;The jet data generally agreed well with previous measurements. The jet velocity error was generally within +/-2--4 m/s. The offset error of up to +/-10 m/s was attributed to difficulties in cell calibration. The velocity data obtained from the airfoil measurements was limited to the regions of space where the gray levels were high enough to yield meaningful results. In these regions, the observed error was comparable to that of the jet.","abstract_html":"A two-component Doppler global velocimetry (DGV) system has been developed, improved, and tested. DGV is a non-intrusive optical velocity measurement technique. DGV measures the Doppler shift of the frequency of the light scattered by seed particles at a specific location. The velocity of the particles is related to the Doppler shift.;DGV measurements were made in the WVU low speed wind tunnel on a turbulent jet and on a NACA 2412 airfoil model with and without tip blowing.;The jet data generally agreed well with previous measurements. The jet velocity error was generally within +/-2--4 m/s. The offset error of up to +/-10 m/s was attributed to difficulties in cell calibration. The velocity data obtained from the airfoil measurements was limited to the regions of space where the gray levels were high enough to yield meaningful results. In these regions, the observed error was comparable to that of the jet.","abstract_has_math":false,"creators":["Starn, Andrew Douglas"],"institution":null,"degree_name":"MS","degree_level":"Thesis","degree_discipline":"Mechanical and Aerospace Engineering","degree_department":null,"school":null,"contributors":["John M. Kuhlman."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2004,"date_issued":"2004-05-01T07:00:00Z","date_published":"2004-05-01T07:00:00Z","updated_at":"2026-07-24T06:15:47Z","subjects":["Aerospace engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://researchrepository.wvu.edu/etd/1466"],"render_values":[{"text":"https://researchrepository.wvu.edu/etd/1466","href":"https://researchrepository.wvu.edu/etd/1466","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.33915/etd.1466","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["John M. Kuhlman."]},{"key":"dc:creator","label":"Author","values":["Starn, Andrew Douglas"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2019-01-17T08:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical and Aerospace Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["MS"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Aerospace engineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://doi.org/10.33915/etd.1466","https://researchrepository.wvu.edu/etd/1466"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["A two-component Doppler global velocimetry (DGV) system has been developed, improved, and tested. DGV is a non-intrusive optical velocity measurement technique. DGV measures the Doppler shift of the frequency of the light scattered by seed particles at a specific location. The velocity of the particles is related to the Doppler shift.;DGV measurements were made in the WVU low speed wind tunnel on a turbulent jet and on a NACA 2412 airfoil model with and without tip blowing.;The jet data generally agreed well with previous measurements. The jet velocity error was generally within +/-2--4 m/s. The offset error of up to +/-10 m/s was attributed to difficulties in cell calibration. The velocity data obtained from the airfoil measurements was limited to the regions of space where the gray levels were high enough to yield meaningful results. In these regions, the observed error was comparable to that of the jet."]},{"key":"dc:title","label":"Title","values":["Doppler global velocimetry measurements in a wing flow field with tip blowing"]}]}],"canonical_facts":{"dc:contributor":["John M. Kuhlman."],"dc:creator":["Starn, Andrew Douglas"],"dc:date.available":["2019-01-17T08:00:00Z"],"dc:description.abstract":["A two-component Doppler global velocimetry (DGV) system has been developed, improved, and tested. DGV is a non-intrusive optical velocity measurement technique. DGV measures the Doppler shift of the frequency of the light scattered by seed particles at a specific location. The velocity of the particles is related to the Doppler shift.;DGV measurements were made in the WVU low speed wind tunnel on a turbulent jet and on a NACA 2412 airfoil model with and without tip blowing.;The jet data generally agreed well with previous measurements. The jet velocity error was generally within +/-2--4 m/s. The offset error of up to +/-10 m/s was attributed to difficulties in cell calibration. The velocity data obtained from the airfoil measurements was limited to the regions of space where the gray levels were high enough to yield meaningful results. In these regions, the observed error was comparable to that of the jet."],"dc:identifier":["https://doi.org/10.33915/etd.1466","https://researchrepository.wvu.edu/etd/1466"],"dc:subject":["Aerospace engineering"],"dc:title":["Doppler global velocimetry measurements in a wing flow field with tip blowing"],"thesis:degree_discipline":["Mechanical and Aerospace Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["MS"]},"updated_at":"2026-07-24T06:15:47Z"}