Spontaneous Fluctuations in Mesoscopic Simulations of Nematic Liquid Crystals

Híjar, H. and Halver, R. and Sutmann, G.

Volume: 18 Pages:
DOI: 10.1142/S0219477519500111
Published: 2019

We analyzed hydrodynamic fluctuations in nematic liquid crystals simulated by Multi-particle Collision Dynamics. Velocity effects on orientation were incorporated by allowing mesoscopic velocity gradients to exert torques on nematic particles. Backflow was included through an explicit application of angular momentum conservation during the collision events. We measured the spectra of hydrodynamic fluctuations and compared them with those derived from a linearized hydrodynamic scheme. Numerical results were found to reproduce the expected coupling between hydrodynamic modes, thus showing that the implementation simulates proper nematodynamic effects at the mesoscopic level. © 2019 World Scientific Publishing Company.

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