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- Title
Numerical Simulation on Effect of Rotation on Thermal Convection in a Shallow Model Czochralski Configuration with a Heated Bottom.
- Authors
Shen, Ting; Wu, Chun‐Mei; Li, You‐Rong
- Abstract
Abstract: This paper presents a set of numerical simulations on the effect of rotation on thermal convection in a shallow model Czochralski configuration with a heated crucible bottom. Results show that when the bottom is heated by low heat flux, the temperature fluctuation can be significantly weakened and the melt can be kept from solidifying. Once the heat flux exceeds a threshold value, the thermocapillary convection will transit to the Benard–Marangoni convection. The temperature fluctuation is amplified by increasing crystal rotation rate or heat flux. The crystal rotation can restrain the azimuthal traveling of the waves. However, the propagating direction of the waves is related to the temperature gradient and the crucible rotation, and is independent of the crystal rotation. The wavenumber is reduced by the crystal rotation individually. Furthermore, the crucible rotation can reduce the effect of the crystal rotation on the wavenumber.
- Subjects
COMPUTER simulation; AZIMUTHAL projection (Cartography); WAVENUMBER; HEAT flux
- Publication
Crystal Research & Technology, 2018, Vol 53, Issue 9, p1
- ISSN
0232-1300
- Publication type
Article
- DOI
10.1002/crat.201700268