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11:03
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
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Non-local fluctuation phenomena in liquids
F Croccolo1,2, J M Ortiz de Zárate3, J V Sengers4
1Laboratoire des Fluides Complexes et leurs Réservoirs, UMR 5150, Université de Pau et des Pays de l'Adour, 64600, Anglet, France. fabrizio.croccolo@univ-pau.fr.
The European Physical Journal. E, Soft Matter
|December 18, 2016
Summary
Fluids in non-equilibrium steady states show system-wide fluctuations. This review examines experimental support for local equilibrium assumptions in non-equilibrium thermodynamics and fluctuating hydrodynamics.
Area of Science:
- Non-equilibrium thermodynamics
- Fluctuating hydrodynamics
- Statistical mechanics
Background:
- Non-equilibrium steady states (NESS) in fluids exhibit long-range fluctuations.
- These phenomena extend across the entire system.
- Understanding NESS is crucial for advancing statistical mechanics and thermodynamics.
Approach:
- Reviewing experimental evidence for theoretical models.
- Assessing the validity of the local equilibrium assumption.
- Connecting theoretical frameworks with observed fluctuation phenomena.
Key Points:
- Local equilibrium assumption is fundamental to non-equilibrium thermodynamics and fluctuating hydrodynamics.
- Experimental data are evaluated for consistency with theoretical predictions.
- The relationship between local equilibrium and non-local fluctuations is explored.
Conclusions:
- Experimental evidence supports the consistency of local equilibrium assumptions.
- This consistency is vital for describing long-range fluctuations in NESS.
- Further research can refine these models for complex fluid systems.
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