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Natural and Marangoni convections in a floating zone.

1989; Society of Chemical Engineers, Japan; Volume: 22; Issue: 4 Linguagem: Inglês

10.1252/jcej.22.385

1881-1299

Yasunori Okano, Ako Hatano, Akira Hirata,

Solidification and crystal growth phenomena

Using an order-of-magnitude evaluation, a quantitative evaluation was performed of the natural and Marangoni convections produced in the melt during single-crystal growth by the floating zone method.The Reynolds number, which forms a standard for free interfacial velocity, was described as a function of the Grashof number, Marangoni number and Prandtl number. The results of this theoretical study showed good agreement with previous experimental works using model liquids and a glass melt.