FRONT AND DOMAIN GROWTH IN THE PRESENCE OF GRAVITY

被引:17
|
作者
LACASTA, AM [1 ]
HERNANDEZMACHADO, A [1 ]
SANCHO, JM [1 ]
机构
[1] UNIV BARCELONA,DEPT ESTRUCT & CONSTITUENTS MAT,E-08028 BARCELONA,SPAIN
来源
PHYSICAL REVIEW B | 1993年 / 48卷 / 13期
关键词
D O I
10.1103/PhysRevB.48.9418
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Front and domain growth of a binary mixture in the presence of a gravitational field is studied. The interplay of bulk- and surface-diffusion mechanisms is analyzed. An equation for the evolution of interfaces is derived from a time-dependent Ginzburg-Landau equation with a concentration-dependent diffusion coefficient. Scaling arguments on this equation give the exponents of a power-law growth. Numerical integrations of the Ginzburg-Landau equation corroborate the theoretical analysis.
引用
收藏
页码:9418 / 9425
页数:8
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