Related Experiment Video
Updated: Aug 8, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Mesoscopic theory of critical fluctuations in isolated granular gases
J Javier Brey1, A Domínguez, M I García de Soria
1Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain. brey@us.es
Abstract:
Fluctuating hydrodynamics is used to describe the total energy fluctuations of a freely evolving gas of inelastic hard spheres near the threshold of the clustering instability. They are shown to be governed only by vorticity fluctuations that also lead to a renormalization of the average total energy. The theory predicts a power-law divergent behavior of the scaled second moment of the fluctuations, and a scaling property of their probability distribution, both in agreement with simulations results. A more quantitative comparison between theory and simulation for the critical amplitudes and the form of the scaling function is also carried out.
More Related Videos
09:00Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography
Published on: September 29, 2019
08:55Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Related Concept Videos
Basic Postulates of Kinetic Molecular Theory: Particle Size, Energy, and Collision
The Kinetic Model of Gases
Kinetic Theory of an Ideal Gas
The number of molecules in one mole is called Avogadro's number...
Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules
Entropy
Distribution of Molecular Speeds