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Título:
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Long-wavelength nonequilibrium concentration fluctuations induced by the Soret effect
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Autores:
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Ortiz de Zárate Leira, José María ;
Fornés, José Antonio ;
Sengers, Jan V.
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2006-10
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Termodinámica
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Tipo = Artículo
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Resumen:
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In this paper we evaluate the enhancement of nonequilibrium concentration fluctuations induced by the Soret effect when a binary fluid layer is subjected to a stationary temperature gradient. Starting from the fluctuating Boussinesq equations for a binary fluid in the large-Lewis-number approximation, we show how one can obtain an exact expression for the nonequilibrium structure factor in the long-wavelength limit for a fluid layer with realistic impermeable and no-slip boundary conditions. A numerical calculation of the wave-number dependence of the nonequilibrium enhancement and of the corresponding decay rate of the concentration fluctuations is also presented. Some physical consequences of our results are briefly discussed.
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En línea:
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https://eprints.ucm.es/id/eprint/27331/1/Ortiz23libre.pdf
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