Particle image velocimentry measurements of an airfoil-vortex interaction event in a two-dimensional wind tunnel

Burwash, Wesley

doi:10.22215/etd/2007-08248

Cited by 3 publications

(12 citation statements)

References 22 publications

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“…Situated after the 12:1 contraction is a It should be noted that initial trials were conducted in the 2D Transverse Vortex Wind Tunnel, located in Room ME2140 at Carleton University. This tunnel is capable of velocities up to approximately 80 m/s [119,120] allowing for higher Reynolds number testing, however, several issues were encountered which deemed it unsuitable. Firstly, the narrow cross-section meant that very low aspect ratio airfoils must be used.…”

Section: Wind Tunnel Facility and Equipmentmentioning

confidence: 99%

The Multi-Objective Design of Flatback Wind Turbine Airfoils

Miller¹

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With the ever increasing lengths of today's wind turbine rotor blades, there is a need for airfoils which are both aerodynamically, and structurally efficient. In this work, a multi-objective genetic algorithm coupled with XFOIL was developed to design flatback wind turbine airfoils. The effect of the aerodynamic evaluator, specifically lift-to-drag ratio, torque, and torque-to-thrust ratio, on the airfoil shape and performance was examined. Under the specified set of constraints and objectives, notable differences, particularly in the levels of lift and roughness insensitivity, were observed.Further analysis, employing the Taguchi method, was performed to determine how various parameters impact the design outcome. The obtained knowledge was used to design a wind turbine specific airfoil family which has comparable, or superior structural and aerodynamic performance as compared to airfoils found in the literature. A wind tunnel experimental set-up was developed at the Carleton University LowSpeed Wind Tunnel for the 2D testing of airfoils. Good agreement between the results obtained at Carleton University and other publicly available data indicates that the set-up is capable of producing meaningful data. A select airfoil, designed by the current author, was tested at Carleton University and its performance is compared to the numerical predictions of XFOIL. Differences in the stall and post-stall regions of the XFOIL predictions are highlighted, and emphasize the importance of wind tunnel testing in the airfoil design process.iii

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Section: Wind Tunnel Facility and Equipmentmentioning

confidence: 99%

The Multi-Objective Design of Flatback Wind Turbine Airfoils

Miller¹

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“…Abstract iii Table 3-1: Example tracer particles for gaseous flows [21] Table 4-1: Grids tested for convergence analysis Table 4-2: Grids tested for plunging convergence analysis Table 5-1: Test Matrix Table 5-2: Optimal PIV parameters as defined by Burwash [3] Table 5-3: Vortex strength error analysis Table 5-4: Sources of relative experimental error in calculating ACL ND Figure 2-11: Schematic of the three-dimensional BVI apparatus by Cadadonna [19] 16 Figure 3-1: Typical two-dimensional Particle Image Velocimetry (PIV) apparatus [20]. 17 Figure 3-2: PIV image capture (A), interrogation region selection (B), correlation (C), vector generation (D) [3] 19…”

Section: Table Of Contentsmentioning

confidence: 99%

“…Conversely, the resolution can be increased by capturing less of the flow field at once, thereby capturing more unique tracer particles. For a comprehensive review of PIV theory, including additional information on tracer particles, laser theory, CCD cameras, and post-processing, see Burwash [3]. For a comprehensive guide to the usage of the PIV system in the tunnel outlined in Chapter 4, see Appendix A.…”

Section: Imaging Optics Image Planementioning

confidence: 99%

“…The task of designing and constructing a wind tunnel at Carleton University suitable for PIV studies of two-dimensional AVI events was accomplished by Brassard [1], then later commissioned by Wilkins [2] and configured for PIV testing by Burwash [3]. This was the tunnel utilized in this study and will be described briefly below.…”

Section: Wind Tunnel Specificationsmentioning

confidence: 99%

“…The desired tunnel speed was set to be 100 m/s or 0.3 Mach, a value well above the typical wind tunnel speeds used for AVI studies [3], but still below the expected impact speed for y-type BVI. These impacts occur at approximately 0.…”

Section: Test Section Speedmentioning

confidence: 99%

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A systematic study of airfoil-vortex interactions by means of particle image velocimetry

Schmidt¹

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The author has granted a nonexclusive license allowing Library and Archives Canada to reproduce, publish, archive, preserve, conserve, communicate to the public by telecommunication or on the Internet, loan, distribute and sell theses worldwide, for commercial or noncommercial purposes, in microform, paper, electronic and/or any other formats. L'auteur a accorde une licence non exclusive permettant a la Bibliotheque et Archives Canada de reproduire, publier, archiver, sauvegarder, conserves transmettre au public par telecommunication ou par I'lntemet, preter, distribuer et vendre des theses partout dans le monde, a des fins commerciales ou autres, sur support microforme, papier, electronique et/ou autres formats. The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. L'auteur conserve la propriete du droit d'auteur et des droits moraux qui protege cette these. Ni la these ni des extraits substantiels de celle-ci ne doivent etre imprimes ou autrement reproduits sans son autorisation. In compliance with the Canadian Privacy Act some supporting forms may have been removed from this thesis. Conformement a la loi canadienne sur la protection de la vie privee, quelques formulaires secondaires ont ete enleves de cette these. While these forms may be included in the document page count, their removal does not represent any loss of content from the thesis. Bien que ces formulaires aient inclus dans la pagination, il n'y aura aucun contenu manquant.

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Mitigation studies of the airfoil-vortex interaction using Large Eddy Simulation

Falconer¹

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Particle image velocimentry measurements of an airfoil-vortex interaction event in a two-dimensional wind tunnel

Cited by 3 publications

References 22 publications

The Multi-Objective Design of Flatback Wind Turbine Airfoils

The Multi-Objective Design of Flatback Wind Turbine Airfoils

A systematic study of airfoil-vortex interactions by means of particle image velocimetry

Mitigation studies of the airfoil-vortex interaction using Large Eddy Simulation

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