The Boltzmann equation for the polymer problem is formulated; some of its properties and general consequences are discussed. The moment solution procedure is used for the case analogous to the dilute Lorentzian gas. With the direction of the first chain segment specified, the chain length...

Non-linear constitutive laws previously obtained within the framework of irreversible thermodynamics are applied to the calculation of the flow alignment and the friction pressure tensor of macromolecular liquids. A non-newtonian viscosity is obtained which decreases with increasing magnitude of...

The decay of an initially prepared bcc structure and the bond-orientational order (anisotropy of the first coordination shell) are studied in a non-equilibrium molecular dynamics simulation for a fluid of 1024 particles interacting with a repulsive r-12 potential. Data are presented for...

The velocity slip of a dense fluid undergoing a plane shear flow is investigated by nonequilibrium molecular dynamics. The flow is driven by moving walls. The particles in the walls are pulled by localized force fields. The resulting velocity profiles exhibit a well-defined velocity slip which...

The smooth-particle weighting functions used in numerical solutions of the thermomechanical continuum equations can be interpreted as weak pair potentials from the standpoint of statistical physics. We examine both equilibrium and nonequilibrium thermomechanical properties of many-body systems...

Nonequilibrium molecular dynamics computer simulations and the kinetic theory of gases are employed to investigate the interrelation between the (macroscopic) transport properties of dilute gases and the underlying characteristic distortions of the (microscopic) velocity distribution function....

The second rank alignment tensor characterizing the preferential orientation of rod-like or disc-like molecules can easily be detected via the birefringence associated with it. The third rank tensor specifying a local short range order with tetrahedral symmetry, as expected for water, on the...

The nonlinear Maxwell model equation for the stress tensor as introduced previously in [O. Hess and S. Hess, Physica A 207 (1994) 517] to treat the shear-thickening and shear-thinning behavior of fluids can also be applied for temperatures and densities where a substance shows a yield stress....

Monte Carlo simulations for a simple model for liquid crystals in the bulk are presented. The model potential describes the anisotropy of the particles in the attractive part of the Lennard Jones-like pair interaction. Isotherms were calculated with constant-volume and constant-pressure...

The temperature and the pressure profile of a dilute or moderately rarefied gas undergoing a plane Poiseuille flow are calculated and compared with simulation data for a gas of hard spheres as first presented by Malek Mansour, Baras and Garcia (Physica A 240 (1997) 225). The Boltzmann equation...