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Article Dans Une Revue Physical Review Fluids Année : 2018

Deformation of a flexible fiber settling in a quiescent viscous fluid

Résumé

The equilibrium state of a flexible fiber settling in a viscous fluid is examined using a combination of macroscopic experiments, numerical simulations, and scaling arguments. We identify three regimes having different signatures on this equilibrium configuration of the elastic filament: weak and large deformation regimes wherein the drag is proportional to the settling velocity as expected in Stokes flow and an intermediate elastic reconfiguration regime where the filament deforms to adopt a shape with a smaller drag which is no longer linearly proportional to the velocity.
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Dates et versions

hal-01934341 , version 1 (25-11-2018)

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Benjamin Marchetti, Verónica Raspa, Anke Lindner, Olivia Du Roure, Laurence Bergougnoux, et al.. Deformation of a flexible fiber settling in a quiescent viscous fluid. Physical Review Fluids, 2018, 3 (10), ⟨10.1103/physrevfluids.3.104102⟩. ⟨hal-01934341⟩
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