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Analysis of Bulk Radiative Heat Transfer in a Crystal and in a Melt Using Numerical Simulation of the Sapphire Crystal Growth by the Stepanov Method
Technical Physics ( IF 0.7 ) Pub Date : 2020-08-31 , DOI: 10.1134/s1063784220080198
M. G. Vasil’ev , S. I. Bakholdin , V. M. Krymov

Abstract

The effect of bulk radiative heat transfer during the growth of profiled sapphire crystals from the melt is studied by the numerical simulation method. The peculiarities in the structure of a lightguide flow in the crystal and in the melt, as well as the possibility of radiation instability of the interface, are considered. It is shown that overcooled regions with the size determined by the growth rate appear under the crystallization front. It is found that the use of a conical shaper ensures a more stable growth.


中文翻译:

用Stepanov方法对蓝宝石晶体生长进行数值模拟,分析晶体和熔体中的大量辐射传热

摘要

通过数值模拟方法研究了异型蓝宝石晶体从熔体生长过程中整体辐射传热的影响。考虑了晶体和熔体中的光导结构的特殊性,以及界面辐射不稳定的可能性。结果表明,过冷区的大小由生长速率决定,出现在结晶前沿下方。已经发现,使用锥形成形器可确保更稳定的生长。
更新日期:2020-08-31
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