Natural Convection During Directional Solidification of a Binary Mixture

被引：0
|
作者：
Hwang, In Gook [1 ]
Choi, Chang Kyun [2 ]
机构：
[1] Univ Suwon, Dept Chem & Biochem Engn, San 2-2, Hwaseong Si 445743, Gyeonggi Do, South Korea
[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea
来源：
KOREAN CHEMICAL ENGINEERING RESEARCH | 2009年 / 47卷 / 02期
关键词：
Propagation Theory; Natural Convection; Solidification; Mushy Layer;
D O I：
暂无
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A mushy layer of dendritic crystals is often formed during solidification of a binary mixture. Natural convection in the mushy layer is analyzed by using the propagation theory we have developed. The critical Rayleigh numbers for the onset of convection are evaluated numerically using the self-similar stability equations based on Emms and Fowler's[18] model. The present results approach those from quasi-static stability analysis in the limit of a large superheat or a small growth rate of the mushy layer.
引用
收藏
页码：174 / 178
页数：5
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