HEAT DIFFUSION ANISOTROPY IN DENDRITIC GROWTH - PHASE FIELD SIMULATIONS AND EXPERIMENTS IN LIQUID-CRYSTALS

Authors
GONZALEZCINCA R RAMIREZPISCINA L CASADEMUNT J HERNANDEZMACHADO A TOTHKATONA T BORZSONYI T BUKA A
Citation
R. Gonzalezcinca et al., HEAT DIFFUSION ANISOTROPY IN DENDRITIC GROWTH - PHASE FIELD SIMULATIONS AND EXPERIMENTS IN LIQUID-CRYSTALS, Journal of crystal growth, 193(4), 1998, pp. 712-719
Citations number
21
Categorie Soggetti
Crystallography
Journal title
Journal of crystal growth → ACNP
ISSN journal
00220248
Volume
193
Issue
4
Year of publication
1998
Pages
712 - 719
Database
ISI
SICI code
0022-0248(1998)193:4<712:HDAIDG>2.0.ZU;2-9
Abstract
An anisotropic heat diffusion coefficient is introduced in order to st udy some interfacial growth phenomena. This anisotropy has been incorp orated in a phase held model which has been studied numerically to rep roduce some fundamental solidification situations (needle crystal grow th) as well as the dynamics of a nematic-smectic-B interface. As a gen eral result, we find that dendrites grow faster in the lower heat diff usion direction. Simulation results are compared with experiments with remarkable qualitative agreement. (C) 1998 Elsevier Science B.V. All rights reserved.