Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Communication: Simple liquids' high-density viscosity.

Lorenzo Costigliola1, Ulf R Pedersen1, David M Heyes2

  • 1Glass and Time, IMFUFA, Department of Science and Environment, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark.

The Journal of Chemical Physics
|March 3, 2018
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Theory of generalized Hertzian hyperspheres.

Physical review. E·2025
Same author

Revised Enskog theory and molecular dynamics simulations of the viscosities and thermal conductivity of the hard-sphere fluid and crystal.

Physical review. E·2024
Same author

Invariant dynamics in a united-atom model of an ionic liquid.

The Journal of chemical physics·2024
Same author

Comparing zero-parameter theories for the WCA and harmonic-repulsive melting lines.

The Journal of chemical physics·2023
Same author

Comparing four hard-sphere approximations for the low-temperature WCA melting line.

The Journal of chemical physics·2022
Same author

Does mesoscopic elasticity control viscous slowing down in glassforming liquids?

The Journal of chemical physics·2021
Same journal

The influence of chirality on the macroscopic behavior of multiferroic smectic phases.

The Journal of chemical physics·2026
Same journal

Polaron transformed canonically consistent quantum master equation.

The Journal of chemical physics·2026
Same journal

The x-ray absorption spectrum of the propargyl radical C3H3●.

The Journal of chemical physics·2026
Same journal

Transient hydroperoxyalkyl intermediates (•QOOH) in isopentane oxidation. I. Conformer- and isomer-resolved infrared spectra.

The Journal of chemical physics·2026
Same journal

Transient hydroperoxyalkyl intermediates (•QOOH) in isopentane oxidation. II. Isomer-resolved unimolecular dynamics.

The Journal of chemical physics·2026
Same journal

Quantum state-to-state dynamics studies of the C(3P) + OH(X2Π) → CO(a3Π) + H(2S) reaction based on a new HCO(12A″) potential energy surface.

The Journal of chemical physics·2026
See all related articles

Fluid viscosity above the triple point depends on temperature relative to the freezing point. This finding, derived from isomorph theory, accurately models simulations and experimental data for various simple fluids.

Area of Science:

  • Physical Chemistry
  • Thermodynamics
  • Computational Physics

Background:

  • Understanding fluid viscosity is crucial for predicting material behavior in various conditions.
  • Existing models often struggle to accurately capture viscosity across different densities and temperatures.

Purpose of the Study:

  • To propose a new, unified expression for the viscosity of simple fluids.
  • To validate this expression against diverse simulation and experimental data.

Main Methods:

  • Utilized the isomorph theory of systems with hidden scale invariance.
  • Developed a viscosity expression based on temperature relative to the freezing temperature at a given density.
  • Compared the expression with computer simulations of the Lennard-Jones system.

Related Experiment Videos

Main Results:

  • The proposed viscosity expression accurately describes computer simulations of the Lennard-Jones system.
  • The model successfully predicts experimental data for argon and methane.
  • It also aligns with simulation results for a liquid sodium effective-pair-potential model.

Conclusions:

  • The viscosity of simple fluids above the triple point is a specific function of reduced temperature (relative to freezing temperature).
  • The isomorph theory provides a robust framework for developing such predictive viscosity models.