Shear viscosity and shear thinning in two-dimensional Yukawa liquids
Z. Donkó, J. Goree, P. Hartmann, K. Kutasi
Abstract
A two-dimensional Yukawa liquid is studied using two different nonequilibrium molecular dynamics simulation methods. Shear viscosity values in the limit of small shear rates are reported for a wide range of Coulomb coupling parameter and screening length. At high shear rates it is demonstrated that this liquid exhibits shear thinning, i.e., the viscosity η diminishes with increasing shear rate. It is expected that two-dimensional dusty plasmas will exhibit this effect.
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