| 二维稳态小的远场来流对纯熔体凝固的影响 |
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| 引用本文： | 姜艳华,陈明文,王自东.二维稳态小的远场来流对纯熔体凝固的影响[J].北京联合大学学报(自然科学版),2006,20(4):64-67. |
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| 作者姓名： | 姜艳华 陈明文 王自东 |
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| 作者单位： | 北京科技大学,数学力学系,北京,100083;北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 考虑动力过冷和小的远场来流对纯熔体凝固的影响,利用Mullins-Sekerka解的形式及渐近分析的方法给出了该凝固系统的基态解和扰动态解,从而揭示了有对流存在时,沿晶体生长的方向、温度场及流场的分布呈现出一个指数下降的现象,为晶体生长的研究及实验分析工作提供了理论依据。
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| 关 键 词： | 动力过冷 小来流 摄动 基态解 扰动态解 指数下降 |
| 文章编号： | 1005-0310（2006）04-0064-04 |
| 收稿时间： | 2006-04-24 |
| 修稿时间： | 2006年4月24日 |
The Effect of an External Flow on Crystal Growth in Two-dimensional Steady State |
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| JIANG Yan-hua,CHEN Ming-wen,WANG Zi-dong.The Effect of an External Flow on Crystal Growth in Two-dimensional Steady State[J].Journal of Beijing Union University,2006,20(4):64-67. |
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| Authors: | JIANG Yan-hua CHEN Ming-wen WANG Zi-dong |
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| Institution: | 1. Department of Mathematics and Mechanics, University of Science and Technology Beijing, Beijing 100083, China; 2. Material Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Deals with the following: the influence of an external flow and kinetic undercooling on crystal growth;steady state solutions and perturbed solutions arising from the from of Mullins-Sekerka solutions and the progressive method;the fall of exponential in the temperature fluctuation of liquid and the solid phase in the case of convection and along the dendrite direction;a theoretical proof for theoretical study and test analysis of crystal growth. |
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| Keywords: | kinetic undercooling external flow perturbation the basic steady state solution perturbed solution the fall of exponential |
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