Effect of crystal and crubicle rotation on the flow stability in the Czochralski model at low Prandtl numbers
- Authors: Bessonov O.A.1
-
Affiliations:
- Ishlinsky Institute for Problems in Mechanics
- Issue: Vol 51, No 4 (2016)
- Pages: 469-477
- Section: Article
- URL: https://journals.rcsi.science/0015-4628/article/view/155271
- DOI: https://doi.org/10.1134/S0015462816040050
- ID: 155271
Cite item
Abstract
The results of a numerical investigation of the joint effect of crystal and crubicle rotation on the flow stability at low Prandtl numbers (Pr=0.01 to 0.07) are presented. The regimes with an elevated stability threshold are determined for various combinations of crystal and crubicle rotations and the heat flux distributions over the growing crystal endface are obtained. The mechanisms of the loss of stability, as the critical values of the Grashof number and the rotation velocities are exceeded, are considered and a new regime of stable nonaxisymmetric flow is established.
About the authors
O. A. Bessonov
Ishlinsky Institute for Problems in Mechanics
Author for correspondence.
Email: bess@ipmnet.ru
Russian Federation, pr. Vernadskogo 101, Moscow, 119526
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