Leading edge vortex structure of revolving model wings

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  • Dye flow visualization analysis of the leading edge vortex (LEV) in hawkmoth, locust forewing and locust hindwing models reveal a dual vortex system with a minor vortex travelling along the leading edge of the wing at a zero angle relative to the leading edge and a primary vortex traveling from wing base to wing tip at a non zero angle relative to the leading edge (θ). The overall trends for all planforms are as follows: As angle of attack (α) increases, detachment point (r/R) decreases and θ, ellipse size, distance between leading edge and vortex centre (x) and the height of the vortex centre above the wing surface (y) all increase. As Reynolds number increases, r/R and θ decrease. With a change in axial flow (offset condition), r/R decreases and the θ, ellipse size, x and y all increase.

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  • Copyright © 2010 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
Date Created
  • 2010


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