Title:
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Hydrodynamic fluctuations in fluids under external gradients
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Author:
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Pérez Madrid, Agustín; Rubí Capaceti, José Miguel
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Other authors:
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Universitat de Barcelona |
Abstract:
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Temperature and velocity correlation functions in a fluid subjected to conditions creating both a temperature and a velocity gradient are computed up to second order in the gradients. Temperature and velocity fluctuations are coupled due to convection and viscous heating. When the viscosity goes to infinity one gets the temperature correlation function for a solid under a temperature gradient, which contains a long-ranged contribution, quadratic in the temperature gradient. The velocity correlation function also exhibits long-range behavior. In a particular case its equilibrium term is diagonal whereas the nonequilibrium correction contains nondiagonal terms. |
Subject(s):
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-Fluctuacions (Física) -Termodinàmica -Fluctuations (Physics) -Thermodynamics |
Rights:
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(c) The American Physical Society, 1986
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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