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Transitions between multiple dynamical states in a confined dense active-particle system
Published in American Physical Society
2017
PMID: 28709325
Volume: 95
   
Issue: 6
Abstract
We study the collective motion of a dense suspension of active swimmers in a viscous fluid medium. The swimmers are modeled as soft spheres moving in a highly viscous fluid medium. The magnitude of the propelling thrust exerted by each particle is taken to be a constant and the direction is aligned to its velocity. Depending on the magnitude of the exerted thrust, several nonequilibrium steady states are observed. The transitions between the steady states are characterized using the total dissipation as a function of the magnitude of the thrust. The transitions between the nonequilibrium states are characterized by changes in exponent at low thrust values. At high thrust values, hysteretic transitions between ordered and disordered states are observed. © 2017 American Physical Society.
About the journal
JournalData powered by TypesetPhysical Review E
PublisherData powered by TypesetAmerican Physical Society
ISSN24700045
Open AccessNo
Concepts (17)
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    Viscosity
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    Viscous flow
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    Active particles
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    Collective motions
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    DENSE SUSPENSION
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    Disordered state
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    HIGHLY VISCOUS FLUIDS
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    HYSTERETIC TRANSITION
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    NON-EQUILIBRIUM STEADY STATE
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    NONEQUILIBRIUM STATE
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    FLUIDS
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    Article
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    Human
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    Motion
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    Steady state
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    Suspension
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    SWIMMING