3D vortex formation of rigid and flexible plates in impulsively starting motion

Thumbnail Image
Files
APS_movie_mpeg-1-Daegyoum Kim and Morteza Gharib.mpg (9.65 MB)
APS_movie_mpeg-2-Daegyoum Kim and Morteza Gharib.mpg (31.66 MB)
No Access Until
Permanent Link(s)
https://hdl.handle.net/1813/11478
Collections
Fluid Dynamics Videos
Other Titles
Authors
Abstract
Three-dimensional vortex formation process for plates in impulsive motion is investigated experimentally by using defocusing digital particle image velocimetry (DDPIV). Rigid and flexible plate cases are compared in order to study the effect of flexibility on 3D vortex formation and associated hydrodynamic forces. This study was motivated by the general question of how the flexibility of flapping propulsors in flying and swimming animals affects vortex formation and propulsive force. For translating and rotating motion, the flexible plate generates a vortex morphology which is drastically different from that of the rigid plate. We identified the deflection of the tip region as the source of this difference. The flexible plate does not produce a large peak for the hydrodynamic force at the impulsive start and stop. This force trend is correlated with smooth vortex formation and shedding processes.
Journal / Series
Volume & Issue
Description
Sponsorship
Date Issued
2008-10-10T09:28:56Z
Publisher
Keywords
3D vortex formation; flexibility
Location
Effective Date
Expiration Date
Sector
Employer
Union
Union Local
NAICS
Number of Workers
Committee Chair
Committee Co-Chair
Committee Member
Degree Discipline
Degree Name
Degree Level
Related Version
Related DOI
Related To
Related Part
Based on Related Item
Has Other Format(s)
Part of Related Item
Related To
Related Publication(s)
Link(s) to Related Publication(s)
References
Link(s) to Reference(s)
Previously Published As
Government Document
ISBN
ISMN
ISSN
Other Identifiers
Rights
Rights URI
Types
Accessibility Feature
Accessibility Hazard
Accessibility Summary
Link(s) to Catalog Record