Measurement of entropy production rate in compressible turbulence

Details Measurement of entropy production rate in compressible turbulence Measurement of entropy production rate in compressible turbulence

2006-07-17

arxiv.org/abs/nlin/0607036v2

Nonlinear Sciences

Chaotic Dynamics

7 Pages, 4 figures, 1 table

Scientific paper

10.1209/epl/i2006-10333-0

The rate of change of entropy $\dot S$ is measured for a system of particles floating on the surface of a fluid maintained in a turbulent steady state. The resulting coagulation of the floaters allows one to relate $\dot S$ to the velocity divergence and to the Lyapunov exponents characterizing the behavior of this system. The quantities measured from experiments and simulations are found to agree well with the theoretical predictions.

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