Thermal Fluctuations in Nonequilibrium Thermodynamics
Jan V. Sengers
Institute for Physical Science and Technology
University of Maryland, College Park, MD, U.S.A.
The lecture will address the following three principles concerning fluctuations in flui
and fluid mixtures that are in not in thermodynamic equilibrium:
The principle of local thermodynamic equilibrium in nonequilibrium
thermodynamics is valid for the thermodynamic properties, but not for the
fluctuations of these properties.
ns in fluids in stationary nonequilibrium states are always long ranged,
encompassing the entire system, even far away from any hydrodynamic
Traditional hydrodynamic instability analysis does not yield a correct description
of fluctuations nea
These principles will be illustrated by theoretical and experimental studies of fluctuations
in liquid and liquid mixtures subjected to a stationary temperature gradient