Vortex shedding and hovering of a rigid body in an oscillating flow
Fluid Dynamics
2009-10-20 v1
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.
Cite
@article{arxiv.0910.3247,
title = {Vortex shedding and hovering of a rigid body in an oscillating flow},
author = {Bin Liu and Annie Weathers and Stephen Childress and Jun Zhang},
journal= {arXiv preprint arXiv:0910.3247},
year = {2009}
}