{"id":{"repo_id":"wvu","oai_identifier":"oai:researchrepository.wvu.edu:etd-2189"},"canonical_url":"https://search.dev.ndltd.org/etd/wvu/oai:researchrepository.wvu.edu:etd-2189","repository":{"repo_id":"wvu","name":"West Virginia University","base_url":"https://researchrepository.wvu.edu/do/oai/"},"display":{"title":"LDA and CTA in-cylinder measurements of intake-generated turbulence for steady flow around a centrally located valve","abstract":"The purpose of this study was to measure the axial and swirl velocities for steady flow in a cylinder past an intake valve, in order to study the effects of swirl and valve lift on turbulence generation. A simple geometry was used for an initial look at the flow past a valve.;A cylinder with a centrally located valve was used as the test bed. The valve was tested at lifts of 4 and 9 mm Two intake geometries were tested: a straight intake port and a swirl intake port. A single sensor Constant Temperature Anemometry (CTA) and a one-component Laser Doppler Anemometry (LDA) system were used to measure velocity profiles in the cylinder.;The LDA and CTA data agreed relatively well. Both showed a conical jet after the valve, which impacted the cylinder wall near 25.4 mm above the cylinder head. A recirculating flow was seen above the valve for each case. Solid body rotation of the flow was present for the swirl intake flow.","abstract_html":"The purpose of this study was to measure the axial and swirl velocities for steady flow in a cylinder past an intake valve, in order to study the effects of swirl and valve lift on turbulence generation. A simple geometry was used for an initial look at the flow past a valve.;A cylinder with a centrally located valve was used as the test bed. The valve was tested at lifts of 4 and 9 mm Two intake geometries were tested: a straight intake port and a swirl intake port. A single sensor Constant Temperature Anemometry (CTA) and a one-component Laser Doppler Anemometry (LDA) system were used to measure velocity profiles in the cylinder.;The LDA and CTA data agreed relatively well. Both showed a conical jet after the valve, which impacted the cylinder wall near 25.4 mm above the cylinder head. A recirculating flow was seen above the valve for each case. Solid body rotation of the flow was present for the swirl intake flow.","abstract_has_math":false,"creators":["Bailey, Gearle Ray, Jr."],"institution":null,"degree_name":"MS","degree_level":"Thesis","degree_discipline":"Mechanical and Aerospace Engineering","degree_department":null,"school":null,"contributors":["John Kuhlman."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2001,"date_issued":"2001-12-01T08:00:00Z","date_published":"2001-12-01T08:00:00Z","updated_at":"2026-07-24T06:15:23Z","subjects":["Automotive engineering","Aerospace engineering","Mechanical engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://researchrepository.wvu.edu/etd/1186"],"render_values":[{"text":"https://researchrepository.wvu.edu/etd/1186","href":"https://researchrepository.wvu.edu/etd/1186","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.33915/etd.1186","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["John Kuhlman."]},{"key":"dc:creator","label":"Author","values":["Bailey, Gearle Ray, Jr."]}]},{"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":["Automotive engineering","Aerospace engineering","Mechanical engineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://doi.org/10.33915/etd.1186","https://researchrepository.wvu.edu/etd/1186"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The purpose of this study was to measure the axial and swirl velocities for steady flow in a cylinder past an intake valve, in order to study the effects of swirl and valve lift on turbulence generation. A simple geometry was used for an initial look at the flow past a valve.;A cylinder with a centrally located valve was used as the test bed. The valve was tested at lifts of 4 and 9 mm Two intake geometries were tested: a straight intake port and a swirl intake port. A single sensor Constant Temperature Anemometry (CTA) and a one-component Laser Doppler Anemometry (LDA) system were used to measure velocity profiles in the cylinder.;The LDA and CTA data agreed relatively well. Both showed a conical jet after the valve, which impacted the cylinder wall near 25.4 mm above the cylinder head. A recirculating flow was seen above the valve for each case. Solid body rotation of the flow was present for the swirl intake flow."]},{"key":"dc:title","label":"Title","values":["LDA and CTA in-cylinder measurements of intake-generated turbulence for steady flow around a centrally located valve"]}]}],"canonical_facts":{"dc:contributor":["John Kuhlman."],"dc:creator":["Bailey, Gearle Ray, Jr."],"dc:date.available":["2019-01-17T08:00:00Z"],"dc:description.abstract":["The purpose of this study was to measure the axial and swirl velocities for steady flow in a cylinder past an intake valve, in order to study the effects of swirl and valve lift on turbulence generation. A simple geometry was used for an initial look at the flow past a valve.;A cylinder with a centrally located valve was used as the test bed. The valve was tested at lifts of 4 and 9 mm Two intake geometries were tested: a straight intake port and a swirl intake port. A single sensor Constant Temperature Anemometry (CTA) and a one-component Laser Doppler Anemometry (LDA) system were used to measure velocity profiles in the cylinder.;The LDA and CTA data agreed relatively well. Both showed a conical jet after the valve, which impacted the cylinder wall near 25.4 mm above the cylinder head. A recirculating flow was seen above the valve for each case. Solid body rotation of the flow was present for the swirl intake flow."],"dc:identifier":["https://doi.org/10.33915/etd.1186","https://researchrepository.wvu.edu/etd/1186"],"dc:subject":["Automotive engineering","Aerospace engineering","Mechanical engineering"],"dc:title":["LDA and CTA in-cylinder measurements of intake-generated turbulence for steady flow around a centrally located valve"],"thesis:degree_discipline":["Mechanical and Aerospace Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["MS"]},"updated_at":"2026-07-24T06:15:23Z"}