Related Experiment Video
Updated: Jul 13, 2026

Homarus Americanus Stomatogastric Nervous System Dissection
Published on: May 28, 2009
Chaoticity of the wet granular gas
A Fingerle1, S Herminghaus, V Yu Zaburdaev
1Max Planck Institute for Dynamics and Self-Organization, Bunsenstrasse 10, 37073 Goettingen, Germany. axel.fingerle@ds.mpg.de
Abstract:
In this work we derive an analytic expression for the Kolmogorov-Sinai entropy of dilute wet granular matter, valid for any spatial dimension. The grains are modeled as hard spheres and the influence of the wetting liquid is described according to the capillary model, in which dissipation is due to the hysteretic cohesion force of capillary bridges. The Kolmogorov-Sinai entropy is expanded in a series with respect to density. We find a rapid increase of the leading term when liquid is added. This demonstrates the sensitivity of the granular dynamics to humidity, and shows that the liquid significantly increases the chaoticity of the granular gas.
Related Concept Videos
Entropy Changes Accompanying Specific Processes
Entropy within the Cell
Gastric Motility
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...
Entropy Change in Reversible Processes
The statement can be further generalized to prove that entropy is a state function. Take a cyclic process between any two points on a p-V diagram.
The Entropy as a State Function
Entropy and Solvation

