Original scientific paper

Shear stress correlation length at constant pressure

Janka Petravić ; Research School of Chemistry, The Australian National University, Canberra ACT 0200, Australia

Abstract

Even in simple liquids, shear stress relaxation is a cooperative effect associated with a correlation length. For subsystems of a size smaller than the correlation length, shear stress is determined by the strain at the boundaries. We show that the shear stress correlation length increases with the isobaric decrease in temperature, and quantify this decrease using molecular dynamics simulations of a simple atomic liquid with short-range repulsive interactions in the isothermal-isobaric ensemble with strained periodic boundary conditions.

Keywords

shear stress relaxation; number effects; boundary conditions

Hrčak ID:

301999

URI

https://hrcak.srce.hr/301999

Publication date:

1.5.2005.

Article data in other languages: croatian

Visits: 571 *