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American Institute of Physics, The Journal of Chemical Physics, 8(122), p. 084903

DOI: 10.1063/1.1848511

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Brownian dynamics algorithm for bead-rod semiflexible chain with anisotropic friction

Journal article published in 2005 by Alberto Montesi, David C. Morse, Matteo Pasquali ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

A model of semiflexible bead-rod chain with anisotropic friction can mimic closely the hydrodynamics of a slender filament. We present an efficient algorithm for Brownian dynamics simulations of this model with configuration dependent anisotropic bead friction coefficients. The algorithm is an extension of that given previously for the case of configuration independent isotropic friction coefficients by Grassia and Hinch [J. Fluid Mech. 308, 255 (1996)]. We confirm that the algorithm yields predicted values for various equilibrium properties. We also present a stochastic algorithm for evaluation of the stress tensor, and we show that in the limit of stiff chains the algorithm recovers the results of Kirkwood and Plock [J. Chem. Phys. 24, 665 (1956)] for rigid rods with hydrodynamic interactions.