Surface Roughness and Trip Effects for a Circular Cylinder at Subcritical Reynolds Numbers

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dc.contributor.advisorRonald Hanson
dc.contributor.advisorPhilippe Lavoie
dc.contributor.authorVidushan Rajavarothayam
dc.date.accessioned2023-08-04T18:14:01Z
dc.date.available2023-08-04T18:14:01Z
dc.date.issued2023-08-04
dc.date.updated2023-08-04T18:14:00Z
dc.degree.disciplineMechanical Engineering
dc.degree.levelMaster's
dc.degree.nameMASc - Master of Applied Science
dc.description.abstractAerodynamic drag is the major source of resistance experienced by athletes in activities such as road cycling. Over bluff bodies, which is how an athlete is typically modelled, passive flow control methods such as surface roughness and boundary layer tripwires appeared to be particularly relevant in transitioning the local boundary layer at the surfaces to turbulence, resulting in a lower drag at smaller Reynolds numbers. In the experimental study, a cylindrical model equipped with textiles and tripwires that had 2D and zigzag geometries were connected to a custom force balance to understand the effects of these surface modifications on the drag. The primary objective of the present work is to explore the effects of drag reduction when fabrics with multiple number of seams and tripwires are attached on a cylinder at different angles from the stagnation point. Utilizing these flow control methods can provide potential time gains for a cyclist.
dc.identifier.urihttps://hdl.handle.net/10315/41411
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectMechanical engineering
dc.subjectAerospace engineering
dc.subject.keywordsFluid Mechanics
dc.subject.keywordsFlow Control
dc.subject.keywordsDrag Reduction
dc.subject.keywordsCylinder
dc.subject.keywordsTripwires
dc.subject.keywordsSurface Roughness
dc.subject.keywordsFabrics
dc.subject.keywordsSeams
dc.subject.keywordsCycling Aerodynamics
dc.subject.keywordsWind Tunnel
dc.subject.keywordsLoad Cell
dc.titleSurface Roughness and Trip Effects for a Circular Cylinder at Subcritical Reynolds Numbers
dc.typeElectronic Thesis or Dissertation

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