Evaluation of the viscosities of a liquid crystal model system by shear flow simulation

The three Miesowicz viscosities of a liquid crystal model system consisting of the Gay–Berne fluid have been obtained by shear flow simulations. The viscosities along an isochore have been followed starting in the nematic phase at high temperatures across the nematic–smectic A phase transition down to low temperatures in the smectic A phase. The relative magnitudes of the viscosities as a function of the structure of the liquid crystal are discussed. The viscosities obtained by the shear flow simulations agree very well with those obtained by Green–Kubo relations in a previous work.