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Please use this identifier to cite or link to this item: http://hdl.handle.net/1813/14101
Title: Vortex shedding and hovering of a rigid body in an oscillating flow
Authors: Liu, Bin
Weathers, Annie
Childress, Stephen
Zhang, Jun
Keywords: hover
Issue Date: 16-Oct-2009
Abstract: The fluid dynamics video shows rigid, spatially asymmetric bodies interacting with oscillating background flows. A free rigid object, here a hollow "pyramid," can hover quite stably against gravity in the oscillating airflow with a zero mean, when its peak speed is sufficiently high. We further show in shadowgraph imaging how this asymmetric body sheds vortices in such an unsteady flow, thus enabling the body to "ratchet" itself through the background flow.
URI: http://hdl.handle.net/1813/14101
Appears in Collections:Fluid Dynamics Videos

Files in This Item:

File Description SizeFormat
mpeg-1.mpgVortex shedding and hovering of a rigid body in an oscillating flow (low resolution)9.69 MBMPEGView/Open
mpeg-2.mpgVortex shedding and hovering of a rigid body in an oscillating flow (high resolution)84.27 MBMPEGView/Open

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