Author(s)

M. Conti & F. Marinozzi

Abstract

The classical Stefan problem assumes a fixed melting temperature. However, when the solid phase is the one with lower density (e. g. water) the solidification of the system causes an overall volume increase that is often contrasted by the container walls. In that case the growing pressure determines a continuous lowering of the freezing point, and the temperature field as well as the interface motion are strongly affected. The problem is addressed in this study: the planar solidification of a slab of finite thickness, contrasted by an opposing elastic force, is numerically simulated assuming two different boundary conditions. The influence of various parameters on the process is presented and discussed. 1 Introduction The solution of Stefan problems describing solidification o

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