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Fingerprints of random flows?

Wilkinson, Michael; Bezuglyy, Vlad and Mehlig, Bernard (2009). Fingerprints of random flows? Physics of Fluids, 21(4) 043304-043314.

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We consider the patterns formed by small rodlike objects advected by a random flow in two dimensions. An exact solution indicates that their direction field is nonsingular. However, we find from simulations that the direction field of the rods does appear to exhibit singularities. First, “scar lines” emerge where the rods abruptly change direction by π. Later, these scar lines become so narrow that they “heal over” and disappear, but their ends remain as point singularities, which are of the same type as those seen in fingerprints. We give a theoretical explanation for these observations

Item Type: Journal Article
Copyright Holders: American Institute of Physics
ISSN: 1070-6631
Keywords: fluid dynamics; transition flow; fluid mechanics; hydrodynamics; flow visualization; physics
Academic Unit/Department: Mathematics, Computing and Technology > Mathematics and Statistics
Item ID: 17109
Depositing User: Sara Griffin
Date Deposited: 19 Aug 2009 09:39
Last Modified: 30 Nov 2012 16:50
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