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Measurement of entropy production rate in compressible turbulence

M. M. Bandi·W. I. Goldburg·J. R. Cressman Jr
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Abstract

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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M. M. Bandi, W. I. Goldburg, J. R. Cressman Jr. 2006-10-22. Measurement of entropy production rate in compressible turbulence. https://doi.org/10.1209/epl%2Fi2006-10333-0

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