On the atmosphere of a moving body

Johan Rønby Pedersen, Hassan Aref

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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. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3406960]
Original languageEnglish
JournalPhysics of Fluids
Issue number5
Pages (from-to)057103
Publication statusPublished - 2010

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Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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