Test of the Fluctuation Relation in lagrangian turbulence on a free surface
arXiv:nlin/0607037 · doi:10.1007/s10955-007-9355-4
Abstract
The statistics of lagrangian velocity divergence are studied for an assembly of particles in compressible turbulence on a free surface. Under an appropriate definition of entropy, the two-dimensional lagrangian velocity divergence of a particle trajectory represents the local entropy rate, a random variable. The statistics of this rate are shown to be in agreement with the fluctuation relation (FR) over a limited range. The probability distribution functions (PDFs) obtained in this analysis exhibit features different from those observed in previous experimental tests.
10 Pages, 3 figures, 2 tables
References in corpus (6)
- Nonequilibrium fluctuations in a resistor
- A fluidized granular medium as an instance of the Fluctuation Theorem
- Fluctuation theorem applied to the Nosé-Hoover thermostated Lorentz gas
- A fluctuation theorem in a random environment
- Measurement of entropy production rate in compressible turbulence
- Entropy production away from the equilibrium