Sound Velocities of Generalized Lennard-Jones (n − 6) Fluids Near Freezing

In a recent paper [S. Khrapak, Molecules 25, 3498 (2020)], the longitudinal and transverse sound velocities of conventional Lennard–Jones system at liquid–solid coexistence were calculated. It was shown that remain almost invariant along boundary lines their magnitudes are comparable with those repulsive soft-sphere hard-sphere models fluid–solid phase transition. This implies attraction does not considerably affect magnitude provides further evidence to this by examining generalized (n − 6) fluids n ranging from 12 7 demonstrating steepness term has only minor effect on velocities. Nevertheless, these trends identified discussed.