Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session M19: Biological Fluid Dynamics: Flying Insects
8:00 AM–10:10 AM,
Tuesday, November 20, 2018
Georgia World Congress Center
Room: B306
Chair: Laura Miller, University of North Carolina at Chapel Hill
Abstract ID: BAPS.2018.DFD.M19.9
Abstract: M19.00009 : High speed Schlieren photography on flying insects
9:44 AM–9:57 AM
Presenter:
Yun Liu
(Purdue University Northwest, Purdue University Northwest)
Authors:
Yun Liu
(Purdue University Northwest, Purdue University Northwest)
Jesse Roll
(Purdue University)
Xinyan Deng
(Purdue University)
A comprehensive understanding of the complex flow topology generated by freely flying insects has eluded the scientific community due in part to the inability to adequately study the unsteady three-dimensional flow structure in a natural setting. In the absence, researchers have primarily relied upon either two-dimensional conventional flow visualizations/measurements on tethered insects or dynamically scaled experiments utilizing robotic flappers fitted with scaled insect wings undergoing simplified flapping motion. To overcome the limitations of these studies, high speed Schlieren photography is successfully implemented on freely flying hawkmoth Manduca sexta.
Flow features such as leading-edge vortex and tip vortex were directly visualized on the insect wings. A well linked vortex structure is captured under each wing, including a vortex loop produced in the down-stroke joint with tip and root vortices created in the upstroke. A physics-based optical flow method is then applied on the Schlieren images, deriving quantitative information about the flow around the flying insects.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.M19.9
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700