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ISSN Online: 2377-424X

International Heat Transfer Conference 4
August 31 - September 5, 1970, Paris-Versailles, France

AXISYMMETRICAL NORMAL FREEZING WITH CONVECTION ABOVE

Get access (open in a dialog) DOI: 10.1615/IHTC4.1660
pages 1-11

Résumé

The normal freezing of naphthalene (m.pt. 80°C) is studied experimentally and numerically. A crystal-growth tube, 19 or 37 mm I.D., filled with naphthalene, is either held stationary or lowered through a diaphragm at a constant speed, 0.183 or 1.10 mm6min, from a hot bath (86, 98, or 110° C) into a cold bath (0° C). Natural convection in the melt is observed to be axisymmetrical and laminar. The computed solid/liquid interface locations and temperatures agree well with experiment. For the descending-tube cases, the interface locations can be predicted closely, even ignoring convection in the melt.