On the atmosphere of a moving body
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Date
2010-05-01
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American Institute of Physics
Abstract
We explore whether a rigid body moving freely with no circulation around it in a two-dimensional ideal fluid can carry a fluid "atmosphere" with it in its motion. Somewhat surprisingly, the answer appears to be "yes." When the body is elongated and the motion is dominated by rotation, we demonstrate numerically that, indeed, regions of fluid follow the body in its motion. We see this as an example of the stability of Kolmogorov-Arnold-Moser tori. These observations of an atmosphere around a moving body with no circulation around it appear to be new.
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Keywords
Chaotic advection
Citation
Roenby, Johan and Aref, Hassan, “On the atmosphere of a moving body,” Phys. Fluids (1994-present), 22, 057103 (2010), DOI:http://dx.doi.org/10.1063/1.3406960