منابع مشابه
Self-thermophoresis and thermal self-diffusion in liquids and gases.
This paper demonstrates the existence of self-thermophoresis, a phenomenon whereby a virtual thermophoretic force arising from a temperature gradient in a quiescent single-component liquid or gas acts upon an individual molecule of that fluid in much the same manner as a "real" thermophoretic force acts upon a macroscopic, non-Brownian body immersed in that same fluid. In turn, self-thermophore...
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We have constructed a regular binary thermal lattice gas model in which the thermal diffusion and mass diffusion are coupled and form two nonpropagating diffusive modes. The power spectrum is shown to be similar in structure as for the one in real fluids, in which the central peak becomes a combination of coupled entropy and concentration contributions. Our theoretical findings for the power sp...
متن کاملRegular Binary Thermal Lattice-Gases
1 Grupo Interdisciplinar de Sistemas Complicados (GISC), Departamento de Matemáticas, Universidad Carlos III de Madrid, Avda. de la Universidad 30, 28911 Leganés, Madrid, Spain. 2 Current Address: Institut für Theoretische Physik II, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany; e-mail: [email protected] 3 Department of Chemical Engineering, University of Amsterdam, Nieu...
متن کاملDiffusion in Granular Gases of Viscoelastic Particles
Abstract. In most of the literature on granular gases it is assumed that the restitution coefficient ǫ, which quantifies the loss of kinetic energy upon a collision is independent on the impact velocity. Experiments as well as theoretical investigations show, however, that for real materials the restitution coefficient depends significantly on the impact velocity. We consider the diffusion proc...
متن کاملAbnormal Diffusion in Wind-tree Lattice Gases
It is found numerically that a two-dimensional left-turning particle-scatterer system does not diffusefor scatterer densities slightly above one-half, or greater. For smaller densities, the diffusion coefficient is much lower than what the Boltzmann approximation predicts; this is caused by orbiting events. An isotropic-scattering model with reflective impurities also shows deviations from the ...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1953
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed030p429.1