| 小雷诺数远场来流对二元系定向凝固的影响 |
| |
| 引用本文： | 刘竞,陈明文.小雷诺数远场来流对二元系定向凝固的影响[J].宁夏大学学报(自然科学版),2009,30(4). |
| |
| 作者姓名： | 刘竞 陈明文 |
| |
| 作者单位： | 1. 石家庄职业技术学院,机电系,河北,石家庄,050081
2. 北京科技大学,数学力学系,北京,100083 |
| |
| 基金项目： | 国家重大基础研究项目 |
| |
| 摘 要： | 利用正则摄动方法研究了在小雷诺数远场来流作用下二元系定向凝固问题,并考虑了杂质浓度对温度场及固液界面的影响.结果表明,在小雷诺数无穷远来流影响下,液、固相温度在界面附近均出现了温度起伏,浓度与温度在沿与边界垂直的方向上呈现振荡和指数型的衰减.
|
| 关 键 词： | 二元系 远场来流 定向凝固 正则摄动 |
Effect of the Directional Solidification in Binary System by the Small Reynolds Number Far Field Flow |
| |
| Liu Jing,Chen Mingwen.Effect of the Directional Solidification in Binary System by the Small Reynolds Number Far Field Flow[J].Journal of Ningxia University(Natural Science Edition),2009,30(4). |
| |
| Authors: | Liu Jing Chen Mingwen |
| |
| Institution: | Liu Jing1; Chen Mingwen2(1.Department of Mechanical Engineering; Shijiazhuang Vocational Technology Institute; Shijiazhuang 050081; China; 2.Department of Mathematics and Mechanics; University of Science and Technology Beijing; Beijing 100083; China); |
| |
| Abstract: | The directional solidification in binary system by the small Reynolds number far field flow is studied by the normal perturbation, and the influence of impurity concentration to the temperature field and solid-liquid interface is considered. It is shown that the small Reynolds number far field flow leads to the liquid, solid-phase temperature appear fluctuations near the interface, then the temperature and concentration will occur to be oscillatory and exponential decaying along the direction which is perpendicular to the boundary. |
| |
| Keywords: | binary system far field flow directional solidification normal perturbation |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
