Elementary vibrational model for transport properties of dense fluids

SA Khrapak - Physics Reports, 2024 - Elsevier
A vibrational model of transport properties of dense fluids assumes that solid-like oscillations
of atoms around their temporary equilibrium positions dominate the dynamical picture. The …

Excess entropy and Stokes-Einstein relation in simple fluids

SA Khrapak, AG Khrapak - Physical Review E, 2021 - APS
The Stokes-Einstein (SE) relation between the self-diffusion and shear viscosity coefficients
operates in sufficiently dense liquids not too far from the liquid-solid phase transition. By …

Bridgman formula for the thermal conductivity of atomic and molecular liquids

SA Khrapak - Journal of Molecular Liquids, 2023 - Elsevier
A simple and popular Bridgman's model predicts a linear correlation between the thermal
conductivity coefficient and the sound velocity of dense liquids. A proportionality coefficient …

Minima of shear viscosity and thermal conductivity coefficients of classical fluids

SA Khrapak, AG Khrapak - Physics of Fluids, 2022 - pubs.aip.org
The shear viscosity and thermal conductivity coefficients of various liquids exhibit minima
along certain trajectories on the phase diagram. These minima arise due to the crossover …

Transport properties of Lennard-Jones fluids: Freezing density scaling along isotherms

SA Khrapak, AG Khrapak - Physical Review E, 2021 - APS
It is demonstrated that properly reduced transport coefficients (self-diffusion, shear viscosity,
and thermal conductivity) of Lennard-Jones fluids along isotherms exhibit quasi-universal …

Vibrational model of heat transfer in strongly coupled Yukawa fluids (dusty plasma liquids)

SA Khrapak - Plasma Physics Reports, 2023 - Springer
A concise overview of the vibrational model of heat transfer in simple fluids with soft pairwise
interactions is presented. The model is applied to evaluate the thermal conductivity …

Hydrodynamic properties of the perfect hard-sphere crystal: microscopic computations with Helfand moments

J Mabillard, P Gaspard - Journal of Statistical Mechanics: Theory …, 2024 - iopscience.iop.org
Within the framework of the local equilibrium approach, the equilibrium and nonequilibrium
properties relevant to the hydrodynamics of the perfect hard-sphere crystal were obtained …

Vibrational model of heat conduction in a fluid of hard spheres

S Khrapak - Applied Sciences, 2022 - mdpi.com
Application of a vibrational model of heat transfer to a fluid made of hard spheres is
discussed. The model was originally proposed to describe heat conduction in fluids with soft …

Correlations between the shear viscosity and thermal conductivity coefficients of dense simple liquids

SA Khrapak, AG Khrapak - JETP Letters, 2021 - Springer
Motivated by the excess entropy scaling of transport coefficients, we look for correlations
between the properly reduced shear viscosity and thermal conductivity coefficients of dense …

Elastic and transport coefficients of the perfect hard-sphere crystal from the poles of the hydrodynamic spectral functions

J Mabillard, P Gaspard - Journal of Statistical Mechanics: Theory …, 2024 - iopscience.iop.org
The elastic and transport coefficients of a perfect face-centered cubic crystal of hard spheres
are computed from the poles of the dynamic structure factor and of the spectral functions of …