CONVECTION RELATED RADIAL SEGREGATION IN AN IDEALIZED HORIZONTAL BRIDGMAN CONFIGURATION - THE QUASI DIFFUSIVE REGIME LIMIT

被引：24

作者：

GARANDET, JP

机构：

[1] CEA/DTA/CEREM/DEM, Section d'Etude de la Solidification et de la Cristallogénèse, Centre d'Etudes Nucléaires de Grenoble, F-38041 Grenoble Cedex

来源：

JOURNAL OF CRYSTAL GROWTH | 1992年 / 125卷 / 1-2期

关键词：

D O I：

10.1016/0022-0248(92)90326-E

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

In order to estimate the convection related radial segregation observed in an idealized horizontal Bridgman configuration, an order of magnitude analysis is carried out, assuming that diffusion is the dominant solute transport mode. The theoretical results, confirmed by means of 2D numerical simulations, indicate that segregation is proportional to the convective intensity in the fluid and that its variation with respect to the growth velocity passes through a maximum. A field of application of this work could be the modelling of crystal growth experiments in microgravity.

引用

页码：112 / 120

页数：9

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