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28 March 2024
 
  » arxiv » 0708.2401

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Hydrodynamics of self-propelled hard rod
Aparna Baskaran ; M. Cristina Marchetti ;
Date 17 Aug 2007
AbstractMotivated by recent simulations and by experiments on aggregation of gliding bacteria, we study a model of the collective dynamics of self-propelled hard rods on a substrate in two dimensions. The rods have finite size, interact via excluded volume and their dynamics is overdamped by the interaction with the substrate. Starting from a microscopic model with non-thermal noise sources, a continuum description of the system is derived. The hydrodynamic equations are then used to characterize the possible steady states of the systems and their stability as a function of the particles packing fraction and the speed of self propulsion.
Source arXiv, 0708.2401
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