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https://hdl.handle.net/2440/103892
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dc.contributor.author | Bolzon, M. | - |
dc.contributor.author | Kelso, R. | - |
dc.contributor.author | Arjomandi, M. | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Experimental Thermal and Fluid Science, 2017; 85:52-68 | - |
dc.identifier.issn | 0894-1777 | - |
dc.identifier.issn | 1879-2286 | - |
dc.identifier.uri | http://hdl.handle.net/2440/103892 | - |
dc.description | Available online 16 February 2017 | - |
dc.description.abstract | This study investigates the effects of a single tubercle terminating at a swept wing's tip on its performance at pre-stall angles of attack (AOAs). Two tubercle geometries with amplitudes of 10.5 mm and wavelengths of 60 mm were investigated. One geometry had a phase of π/2, which was termed the “peak” configuration, while the other had a phase of 3π/2, which was termed the “trough” configuration. Surface flow visualisation, force measurements, and wake surveys were conducted on the wing configurations at a 225,000 chord Reynolds number. The flow visualisation was conducted at 0°, 3°, 6°, 9°, and 12° AOAs, the wake surveys were conducted at 0°, 3°, 6°, and 9° AOAs, and the force measurements were conducted from −2° to 15° AOAs in 1° increments. The wings were NACA 0021 profiles, untapered, and swept at a 35° angle. Evidence of the flow mechanism “compartmentalization” was observed over the trough configuration at 12° AOA. At 1° and 2° AOAs, the tubercle configurations typically reduced the lift coefficient and lift-to-drag ratio by 3%, but neither configuration greatly affected the drag coefficient. Neither tubercle configuration greatly affected the lift coefficient, drag coefficient, or lift-to-drag ratio from 3° to 15° AOAs, with typical changes of 1% or 2% observed. Both tubercle configurations typically changed the induced and profile drag coefficients by 2% and 5%, respectively, from 0° to 9° AOAs. From 6° to 9° AOAs, the π/2 and 3π/2 tubercle configurations typically changed the wingtip vortex strength by 2.2%, and had opposite effects from each other. | - |
dc.description.statementofresponsibility | Michael D. Bolzon, Richard M. Kelso, Maziar Arjomandi | - |
dc.language.iso | en | - |
dc.publisher | Elsevier | - |
dc.rights | © 2017 Published by Elsevier Inc. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.expthermflusci.2017.02.016 | - |
dc.subject | Leading edge tubercle; Flow control; Wake surveying; Wing performance | - |
dc.title | Performance effects of a single tubercle terminating at a swept wing’s tip | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.expthermflusci.2017.02.016 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Kelso, R. [0000-0002-5783-9232] | - |
dc.identifier.orcid | Arjomandi, M. [0000-0002-7669-2221] | - |
Appears in Collections: | Aurora harvest 7 Mechanical Engineering publications |
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