The minimization of mechanical work in vibrated granular matter

Clewett, James P.D.; Wade, Jack; Bowley, R.M.; Herminghaus, Stephan; Swift, Michael R.; Mazza, Marco G.

Abstract

Experiments and computer simulations are carried out to investigate phase separation in a granular gas under vibration. The densities of the dilute and the dense phase are found to follow a lever rule and obey an equation of state. Here we show that the Maxwell equal-areas construction predicts the coexisting pressure and binodal densities remarkably well, even though the system is far from thermal equilibrium. This construction can be linked to the minimization of mechanical work associated with density fluctuations without invoking any concept related to equilibrium-like free energies.

Citation

Clewett, J. P., Wade, J., Bowley, R., Herminghaus, S., Swift, M. R., & Mazza, M. G. (in press). The minimization of mechanical work in vibrated granular matter. Scientific Reports, 6, Article 28726. https://doi.org/10.1038/srep28726

• Journal Article Type: Article
• Acceptance Date: Jun 3, 2016
• Online Publication Date: Jul 4, 2016
• Deposit Date: Dec 21, 2016
• Publicly Available Date: Dec 21, 2016
• Journal: Scientific Reports
• Electronic ISSN: 2045-2322
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Article Number: 28726
• DOI: https://doi.org/10.1038/srep28726
• Keywords: Phase transitions, Critical phenomena, Statistical physics
• Public URL: https://nottingham-repository.worktribe.com/output/802362
• Publisher URL: http://www.nature.com/articles/srep28726
• Contract Date: Dec 21, 2016