Volume 76, Number 4, November 2006
|Page(s)||595 - 601|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||20 October 2006|
Measurement of entropy production rate in compressible turbulence
Department of Physics & Astronomy, University of Pittsburgh Pittsburgh, PA 15260, USA
2 Krasnow Institute, George Mason University - Fairfax, VA 22030, USA
Corresponding author: firstname.lastname@example.org
Accepted: 29 September 2006
The rate of change of entropy 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 to the 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.
PACS: 47.27.-i – Turbulent flows / 47.27.ed – Dynamical systems approaches / 47.52.+j – Chaos in fluid dynamics
© EDP Sciences, 2006
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