Solidification of a paraffin within tall enclosure
by
Jozef Goscik
Bialystok University of Technology, Poland

It is well known that at some circumstances of mathematical modelling of the liquid-solid phase change processes problem of proper description of the density difference between solid and liquid phase is very important becoming a challenge. In the paper results of the series experimental runs are presented that confirm important influence of the difference. The most spectacular in the paper is to present a shape and geometry of the shrinkage cavity forming during solidification of a Phase Change Material (PCM – cytoparaffin 52-54) within a tall rectangular container (aspect ratio height/width equal 10). At start of each experimental run the PCM has been initially maintained at the temperature higher than phase change temperature. The results collected showed that the density difference essentially affects geometry of the solid core especially at regions around axis of symmetry.

Date received: April 18, 1999

Copyright © 1999 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # caco-32.