A generalization of the Einstein relation for thermodynamic fluctuations is applied to a fluid undergoing Couette flow. It is speculated that if the strain rate fluctuations are to reduce to the known equilibrium results, then the shear dilation effect, that is the variation of the pressure with...

The behavior of a dense two-dimensional soft disc liquid under shear is studied via nonequilibrium molecular dynamics. The structure factor for the liquid at a given shear rate is evaluated directly by plotting the particle positions, taken at random from the NEMD simulation at that shear, onto...

The analysis of transport coefficients based on the modified Enskog theory (MET), discussed in a previous publication, has been extended to include the self-diffusion coefficient (D) and the bulk viscosity coefficient (ηv). Specifically, calculated values according to the MET are compared with...

Preliminary SANS (small angle neutron scattering) measurements from a well characterized binary colloidal suspension of 91 nm polystyrene latex and 54 nm silica particles in water are reported for the Q range 0.02Q (nm−1)0.12, where Q is the scattering wave vector. The polystyrene-to-silica...

The pressure, energy and self-diffusion coefficient have been calculated for an 11-6-8 fluid using the method of molecular dynamics. A comparison with data for argon, krypton and xenon is presented. It is shown that agreement between theory and experiment for the thermodynamic properties is...

Symplectic algorithms are investigated for their phase space conserving properties for thermo-statted Hamiltonians commonly used in equilibrium molecular dynamics. Corresponding algorithms can be generated for the dissipative Sllod equations of motion for Couette flow in two dimensions. This...

We examine the number dependence of the largest Lyapunov exponent for nonlinear dynamical systems in one, two and three Cartesian dimensions. Our results suggest that the largest Lyapunov exponent diverges logarithmically with system size, independently of the number of Cartesian dimensions and...

We review some of the principal results obtained from non-equilibrium molecular dynamics simulations of Couette flow in fluids. The simulations show that even simple fluids exhibit a wide variety of non-Newtonian behaviour (e.g., viscoelasticity, shear thinning and dilatancy, normal stress...

Recently it has been shown that even far from equilibrium, bulk thermal transport coefficients can be calculated from the maximal, phase space, Lyapunov exponents using the conjugate pairing rule. We point out that the Lyapunov exponents themselves can be expressed in terms of “Green-Kubo”...

We use nonequilibrium molecular dynamics computer simulation to explore a number of properties of the Gaussian thermostat. We show for a nonequilibrium system at a fixed state point, that within an infinite family of thermostats the Gaussian thermostat appears to: (i) minimise the largest...