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Thermal Conductivity of Simple Liquids:Origin of Temperature and Packing Fraction Dependences
- Source :
- Journal of Chemical Physics, Journal of Chemical Physics, 2014, 140, pp.114502. ⟨10.1063/1.4868438⟩, Journal of Chemical Physics, American Institute of Physics, 2014, 140, pp.114502. ⟨10.1063/1.4868438⟩
- Publication Year :
- 2014
- Publisher :
- arXiv, 2014.
-
Abstract
- The origin of both weak temperature dependence and packing fraction dependence of $T^{1/4}\eta^{3/2}$ in the thermal conductivity of the simple Lennard-Jones (LJ) liquid is explored. In order to discuss the relative contributions from attractive or repulsive part of the interaction potential separately, the thermal conductivity of a series of Weeks-Chandler-Anderson (WCA) fluids is calculated by molecular dynamics simulations. The results show that the repulsive part plays the main role in the heat conduction, while the attractive part has no direct effect on the thermal conductivity for a given packing fraction. By investigating WCA fluids with potentials of varying softness, we explain the difference observed between the LJ liquids such as argon and Coulombic liquids such as NaCl.<br />Comment: 4 pages, 4 figures
- Subjects :
- Chemical Physics (physics.chem-ph)
SIMPLE (dark matter experiment)
Argon
Materials science
Statistical Mechanics (cond-mat.stat-mech)
General Physics and Astronomy
Order (ring theory)
chemistry.chemical_element
Thermodynamics
FOS: Physical sciences
Thermal conduction
Atomic packing factor
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
Condensed Matter::Soft Condensed Matter
Molecular dynamics
Thermal conductivity
Interaction potential
chemistry
Physics - Chemical Physics
Physical and Theoretical Chemistry
Condensed Matter - Statistical Mechanics
Subjects
Details
- ISSN :
- 00219606 and 10897690
- Database :
- OpenAIRE
- Journal :
- Journal of Chemical Physics, Journal of Chemical Physics, 2014, 140, pp.114502. ⟨10.1063/1.4868438⟩, Journal of Chemical Physics, American Institute of Physics, 2014, 140, pp.114502. ⟨10.1063/1.4868438⟩
- Accession number :
- edsair.doi.dedup.....f32f98d4e671ef4219475e37cd85f519
- Full Text :
- https://doi.org/10.48550/arxiv.1404.2559