| Original Articles |
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Numerical Modeling of Velocity and Temperature Distribution of
the Buoyancy Convection Effect in KNbO3 Melt |
| LIU Zhao-Hua;JIN Wei-Qing;PAN Zhi-Lei |
| Shanghai Institute of Ceramics, Chinese Academy of Sciences,
Shanghai 200050 |
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| Cite this article: |
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LIU Zhao-Hua, JIN Wei-Qing, PAN Zhi-Lei 2002 Chin. Phys. Lett. 19 1007-1009 |
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Abstract Numerical modeling of velocity and temperature fiels in high-temperature KNbO3 melt of a loop-shaped Pt wire heater is carried out by using the commercial computational code ANSYS for the mathematical solution of the governing equations. Based on the experimental boundary conditions and the Boussinesq approximation, the numerical modeling of a steady and two-dimensional model is applied to study the process under consideration of the buoyancy-driven convection condition. The result is compared with the previous experimental and theoretical data obtained in our laboratory, and the former is in agreement with the latter. Thus a theoretical guide for reasonable growth conditions is provided by studying in depth the real fluid flow effects in the crystal growth from the melt.
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| Keywords:
78.20.Bh
47.20.Bp
44.25.+f
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Published: 01 July 2002
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| PACS: |
78.20.Bh
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(Theory, models, and numerical simulation)
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47.20.Bp
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(Buoyancy-driven instabilities (e.g., Rayleigh-Benard))
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44.25.+f
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(Natural convection)
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