Measurement of entropy production rate in compressible turbulence
M. M. Bandi, W. I. Goldburg, J. R. Cressman
Abstract
The rate of change of entropy 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 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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