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A Lattice-Boltzmann model for suspensions of self-propelling colloidal particles
S Ramachandran1, P B Sunil Kumar, I Pagonabarraga
1Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India.
Abstract:
We present a Lattice-Boltzmann method for simulating self-propelling (active) colloidal particles in two dimensions. Active particles with symmetric and asymmetric force distribution on their surface are considered. The velocity field generated by a single active particle, changing its orientation randomly, and the different time scales involved are characterized in detail. The steady-state speed distribution in the fluid, resulting from the activity, is shown to deviate considerably from the equilibrium distribution.
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