Abstract :
Dense hard-sphere and Lennard-Jones fluids and also liquid mercury and water
are studied to see if they obey the linear isotherm regularity suggested by
Parsa, far and Mason. For dense hard-sphere fluids a behavior consistent with
the regularity is observed. Data from simulations of the Lennard Jones fluid
were observed to follow the trends proposed by the regularity. For mercury,
agreement between the experimental data and the predictions of the regularity
is obtained. This suggests that the scope of the regularity can be extended to
include liquid metals. In the case of water, Ibr pressure ranges that are not too
large, quantitative agreement with the predictions of the regtdarity can be
obtained. Over larger ranges of pressure, systematic deviations appear, but the
agreement is still satislactory. Based on the model previously proposed for the
regularity, a discussion of some aspects of the parameters in the equation is
given.