Rk. Sharma et al., BINARY COLLISION CONTRIBUTION TO TRANSVERSE CURRENT CORRELATION-FUNCTION OF DENSE FLUIDS, The Journal of chemical physics, 108(7), 1998, pp. 2919-2929
An expression for the binary collision contribution to the first order
memory function of the transverse current correlation function has be
en obtained using the cluster expansion technique for particles of a f
luid interacting via a continuous potential. The resulting expression
involves the static pair correlation function and the time dependence
of position, momentum, and acceleration of a particle. In the long wav
elength limit our expression determines the time development of the au
tocorrelation function of transverse stress.:These time-dependent func
tions have been evaluated numerically for the Lennard-Jones potential
for some thermodynamic states and results have been compared with mole
cular dynamics data. It has also been found that for a hard sphere int
eraction our expression for the shear viscosity reduces to the Enskog
result. (C) 1998 American Institute of Physics.