Thermal diffusion in a binary liquid due to rectified molecular fluctuations
Idioma
en
Article de revue
Este ítem está publicado en
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics. 2011-03-18, vol. 83, n° 3, p. 030501 (4)
American Physical Society
Resumen en inglés
The Soret motion in binary liquids is shown to arise to a large extent from rectified velocity fluctuations. From a hard-bead model with elastic collisions in a nonuniform temperature, we derive a net force on each molecule, ...Leer más >
The Soret motion in binary liquids is shown to arise to a large extent from rectified velocity fluctuations. From a hard-bead model with elastic collisions in a nonuniform temperature, we derive a net force on each molecule, which is proportional to the temperature gradient and depends on the ratio of the molecular masses and moments of inertia. Our findings agree with previous numerical simulations and provide an explanation for the thermal diffusion isotope effect observed for several liquids.< Leer menos
Palabras clave en inglés
Soret effect
binary liquids
thermophoresis
Orígen
Importado de HalCentros de investigación