Forced convection and thermocapillarity in silicon Czochraslki crystal growth in hemispherical crucible - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Physics: Conference Series Année : 2009

Forced convection and thermocapillarity in silicon Czochraslki crystal growth in hemispherical crucible

Résumé

In order to understand the influence of a semispherical crucible geometry combined with different convection modes as a thermocapillary convection, natural convection and forced convection, induced by crystal rotation, on melt flow pattern in silicon Czochralski crystal growth process, a set of numerical simulations are conducted using Fluent Software. We solve the system of equations of heat and momentum transfer in classical geometry as cylindrical and modified crystal growth process geometry as cylindro-spherical. In addition, we adopt hypothesis adapted to boundary conditions near the interface and calculations are executed to determine temperature, pressure and velocity fields versus Grashof and Reynolds numbers. The analysis of the obtained results led to conclude that there is advantage to modify geometry in comparison with the traditional one. The absence of the stagnation regions of fluid in the hemispherical crucible corner and the possibility to control the melt flow using the crystal rotation enhances the quality of the process comparatively to the cylindrical one. The pressure field is strongly related to the swirl velocity.
Fichier principal
Vignette du fichier
Mokhtari2010.pdf (1.55 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00454071 , version 1 (02-04-2020)

Identifiants

Citer

F. Moktari, A. Bouabdallah, M. Zizi, S. Hanchi, A. Alemany. Forced convection and thermocapillarity in silicon Czochraslki crystal growth in hemispherical crucible. Journal of Physics: Conference Series, 2009, The Third International Symposium on Bifurcations and Instabilities in Fluid Dynamics 10–13 August 2009, Nottingham, UK, 216, pp.012014. ⟨10.1088/1742-6596/216/1/012014⟩. ⟨hal-00454071⟩

Collections

UGA CNRS SIMAP
55 Consultations
31 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More