Experimental test of the Gallavotti–Cohen fluctuation theorem in turbulent flows

S Ciliberto, N Garnier, S Hernandez, C Lacpatia, J.-F Pinton and G Ruiz Chavarria

Physica A: Statistical Mechanics and its Applications, 2004, vol. 340, issue 1, 240-250

Abstract: We test the fluctuation theorem from measurements in turbulent flows. We study the time fluctuations of the force acting on an obstacle, and we consider two experimental situations: the case of a von Kármán swirling flow between counter-rotating disks and the case of a wind tunnel jet. We first study the symmetries implied by the Gallavotti–Cohen fluctuation theorem (FT) on the probability density distributions of the force fluctuations; we then test the Sinai scaling. We observe that in both experiments the symmetries implied by the FT are well verified, whereas the Sinai scaling is established, as expected, only for long times.

Keywords: Turbulence; Statistical mechanics; Fluctuation theorem (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:340:y:2004:i:1:p:240-250

DOI: 10.1016/j.physa.2004.04.013

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