Issue
J. Phys. IV France
Volume 11, Number PR6, Octobre 2001
Sciences de la matière et microgravité
Page(s) Pr6-151 - Pr6-159
DOI https://doi.org/10.1051/jp4:2001618
Sciences de la matière et microgravité

J. Phys. IV France 11 (2001) Pr6-151-Pr6-159

DOI: 10.1051/jp4:2001618

Finite volume and spectral methods applied to Pb-30%TI alloy solidification

R. Guérin1, M. El Ganaoui2, P. Haldenwang3 and P. Bontoux3

1  L2MP, Université d'Aix Marseille III, UMR 6137 du CNRS, Faculté des Sciences et Techniques de Saint Jérôme, Case 151, 13397 Marseille cedex 20, France
2  SPCTS, UMR 6638 du CNRS, Faculté des Sciences de Limoges, 123 avenue Albert Thomas, 87060 Limoges cedex, France
3  L3M, FRE 22045 du CNRS, Université d'Aix Marseille II, 38 Joliot Curie, 13451 Marseille, France


Abstract
Convection developing in the melted alloy Pb-30 % TI is studied under up-ward directional solidification conditions. Numerical investigation is based on the collocation Chebychev methods and the enthalpy-porosity formulation associeted to the finite volume approximation. The methods is able to describe properly various convective solutal patterns and transitions according to gravity level (symmetric, asymmetric, time-dependent). Signature of on the solidification front unsteadiness in terme of the striations is exibited.



© EDP Sciences 2001