期刊论文

Liangqi Zhang (张良奇)<&wdkj&>Zhong Zeng (曾忠)

英文

Physics of Fluids

1070-6631

2022

34

11

114108

10.1063/5.0117206

National Natural Science Foundation of China; Science and Technology Research Program of Chongqing Municipal Education Commission; Fundamental Research Funds for the Central Universities; National Natural Science Foundation of Hunan Province; [12172070]; [12102071]; [11902142]; [KJQN202100706]; [2021CDJQY-055]; [2019JJ50514]

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In this work, we explore the instability of the complex convection in the Czochralski model concerning the effects of the radii ratio, melt materials, and crystal rotation. Particularly, linear stability analysis is conducted based on the spectral element method for three groups of cases with the same interval for the variation of the radii ratio (lambda) but different material Prandtl number (Pr) and dimensionless crystal rotation velocity omega(s). We observe that, for both omega(s) = 0 and omega(s) = 300, the mixed convection of silicon melt (Pr = 0.011) becomes less stable with the increas...