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Article Dans Une Revue Physical Review Letters Année : 2011

Gyrotaxis in a steady vortical flow.

Résumé

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.
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hal-03537707 , version 1 (20-01-2022)

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William M. Durham, Eric Climent, Roman Stocker. Gyrotaxis in a steady vortical flow.. Physical Review Letters, 2011, 106 (3), pp.238102-1. ⟨10.1103/PhysRevLett.106.238102⟩. ⟨hal-03537707⟩
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