A Phenomenological Theory of Viscosities of Liquids

概要

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When melting point is approached from higher temperature, certain melts show an increase of viscosity considerably greater than the usual exponential temperature (for example, monatomic liquid metals). A model exists in which this feature is attributed to cluster formation. In this paper, at first we have introduced the outline of the phenomenological theory of the viscosity of monatomic liquid metals by S. Takeuchi and T lida. By extending this theory, we have drived an expression for the viscosity of liquids with large temperature dependence. Namely, this is the generalization of already obtained theory, based on Einstein model and momentum transfer taking place at every extreme displacement. Cluster shapes (spherical particles or non-spherical particles) and the temperature dependence of the average mass of clusters in a melt can be estimated semi-quantitatively by this expression.
大阪大学の論文