Measurement of entropy production rate in compressible turbulence

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.

7 Pages, 4 figures, 1 table

References in corpus (1)

• Energy flux fluctuations in a finite volume of turbulent flow

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