Influence of seed crystal dimension on crystal growth from solution under microgravity

Citation
Zh. Zhu et al., Influence of seed crystal dimension on crystal growth from solution under microgravity, CHIN PHYS, 9(5), 2000, pp. 321-324
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS
ISSN journal
1009-1963 → ACNP
Volume
9
Issue
5
Year of publication
2000
Pages
321 - 324
Database
ISI
SICI code
1009-1963(200005)9:5<321:IOSCDO>2.0.ZU;2-Y
Abstract
The influence of the dimension of seed crystal on the characteristics of cr ystal growth from solution under microgravity is studied. The dimensionless average velocity of fluid V-av, the dimensionless maximum velocity of flui d V-max, the temperature distribution index S-theta, the concentration dist ribution index S-phi and the dimensionless average growth rate of crystal < (V)over bar(cg)> are calculated by only taking into account the variation o f the solution density caused by the temperature change, that caused by the concentration change being neglected. In certain regions of the parameter (Ra, Pr, Sc and mu) space, some scaling laws are generated: the scales of S -phi and <(V)over bar(cg)> are given by power functions of mu with negative exponents. It is shown that the characteristics of crystal growth for smal l seed crystal are different from those for large seed crystal.