Abstract
The planar flow casting (PFC) process for rapid solidification of metallic materials has been in commercial use to produce thin strips of glassy or microcrystalline materials. The conditions of melt puddle between nozzle and rotating wheel affect significantly the quality and dimensional uniformity of the downstream ribbon. The objective of this research is to develop mathematical model to analyze the combined heat and momentum transfer phenomena during the formation of puddle. The model is based on a computational fluid dynamics technique, called the SOLA-VOF scheme, which possesses the capability of treating transient fluid flow problems with evolution of free boundaries. Furthermore, the principle of enthalpy conservation has also been adapted in the technique to analyze the variation of melt temperature and the corresponding cooling rate of the melt. The simulated results reveal how the melt puddle is formed between the nozzle and the rotating substrate and how changes in process conditions can effect the puddle formation and its corresponding fluid and heat transfer behavior.
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