Negative entropy-production rate in Rayleigh-Bénard convection in two-dimensional Yukawa liquids

Pawandeep Kaur and Rajaraman Ganesh
Phys. Rev. E 100, 053201 – Published 7 November 2019

Abstract

The steady-state fluctuation theorem (SSFT) gives the relative probability of occurrence of events violating the second law of thermodynamics in a system with a small number of degrees of freedom. Using two-dimensional complex plasma as a working medium, wherein particle level observation of instantaneous velocities and positions has become experimentally possible, we perform “first-principles” molecular-dynamics simulations using the Yukawa potential in the presence of external gravity and an external temperature gradient leading to the onset and formation of Rayleigh-Bénard convection cells. In such a far-from-equilibrium steady state, the SSFT is put to the test. It is demonstrated that the SSFT is satisfied without any additional fit parameter for observation time τ, comparable to or greater than the relevant microscopic timescale associated with the system under observation.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
10 More
  • Received 8 July 2019
  • Revised 24 September 2019

DOI:https://doi.org/10.1103/PhysRevE.100.053201

©2019 American Physical Society

Physics Subject Headings (PhySH)

Plasma PhysicsStatistical Physics & Thermodynamics

Authors & Affiliations

Pawandeep Kaur* and Rajaraman Ganesh

  • Institute for Plasma Research, HBNI, Bhat, Gandhinagar 382428, India

  • *pawandeep.kaur@ipr.res.in

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 100, Iss. 5 — November 2019

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review E

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×