Non-equilibrium molecular dynamics calculation of thermal conductivity of flexible molecules: butane

Abstract
We introduce a new version of the Evans non-equilibrium molecular dynamics algorithm for thermal conductivity that can be applied to molecules with arbitrary internal degrees of freedom including rigid-body rotation. The algorithm is tested by calculating the thermal conductivity of a model butane fluid. It gives a value in good agreement with that obtained from the Green-Kubo formula evaluated at equilibrium and also with the experimental value.