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对流条件下球状晶核生长摄动分析

Asymptotic Analysis of Crystal Nucleus Growth with a Convective Flow
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摘要 本文建立了含有小雷诺数对流项的晶核生长的数学物理模型,利用摄动方法对数学模型进行了详细地分析,研究了熔体的小雷诺数对流对球状晶核生长的影响.结果分析表明,在强加来流作用下球状晶界面不再稳定,而是沿远场来流方向进行演化. A mathematical and physical model with a term of the small Reynolds convection is established to describe the growth of a spherical crystal nucleus.By using the asymptotic analysis method,the small Reynolds convection effect,which is growth of a spherical crystal nucleus,is studied.The results obtained in this paper show that the spherical crystal interface is unstable and evolves along the direction of the far field flow.
出处 《武汉大学学报(理学版)》 CAS CSCD 北大核心 2010年第6期644-648,共5页 Journal of Wuhan University:Natural Science Edition
基金 国家高技术研究发展计划(863)项目(G2000067206-1) 皖西学院自然科学研究项目(WXZQ0602)
关键词 晶体生长 熔体对流 控制方程 渐近分析 界面稳定性 crystal growth convection control equation asymptotic analysis interface stability
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