Hydrodynamics of self-propelled hard rods.
Motivated 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 nonthermal 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.
Baskaran
Aparna
A
Physics Department, Syracuse University, Syracuse, New York 13244, USA.
Marchetti
M Cristina
MC
D002465:Cell Movement / Q000502:physiology*; D003198:Computer Simulation; D008124:Locomotion / Q000502:physiology*; D044085:Microfluidics / Q000379:methods*; D008954:Models, Biological; D020409:Molecular Motor Proteins / Q000502:physiology*; D014867:Water
D020409:Molecular Motor Proteins; D014867:Water