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Gyrotaxis in a steady vortical flow.

Durham, William M. and Climent, Éric and Stocker, Roman Gyrotaxis in a steady vortical flow. (2011) Physical Review Letters (PRL), 106 (3). 238102-1. ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.106.238102


We show that gyrotactic motility within a steady vortical flow leads to tightly clustered aggregations of microorganisms. Two dimensionless numbers, characterizing the relative swimming speed and stability against overturning by vorticity, govern the coupling between motility and flow. Exploration of parameter space reveals a striking array of patchiness regimes. Aggregations are found to form within a few overturning time scales, suggesting that vortical flows might be capable of efficiently separating species with different motility characteristics.

Item Type:Article
Additional Information:Thanks to American Physical Society editor. The definitive version is available at
HAL Id:hal-03537707
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Massachusetts Institute of Technology - MIT (USA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:29 Nov 2012 10:11

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