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| 分析金属熔滴快速凝固过程的双倒易边界元方法 | |
| 引用本文： | 郭文,卢文强,刘秋生,马重芳. 分析金属熔滴快速凝固过程的双倒易边界元方法[J]. 工程热物理学报, 2003, 24(6): 1028-1030 |
| 作者姓名： | 郭文 卢文强 刘秋生 马重芳 |
| 作者单位： | 1. 中国科学院研究生院,国家微重力实验室,北京,100039 2. 中国科学院力学研究所,国家微重力实验室,北京,100080 3. 北京工业大学,北京,100022 |
| 基金项目： | 国家自然科学基金(No.50176048)，国家重点基础研究发展规划项目资助(No.G200026300) |
| 摘 要： | 本文发展了非线性边界条件相变传热过程的轴对称双倒易边界元方法,数值模拟了金属熔滴在快速冷却条件下的快速凝固过程。分别研究了在微重力落管和落塔中及喷射成形过程中金属熔滴的快速凝固过程,得到了过冷度,再辉时间,温度变化及相变界面随时间的变化等数值结果。 |
| 关 键 词： | 快速凝固 双倒易边界元方法 过冷度 |
| 文章编号： | 0253-231X(2003)06-1028-03 |
| 修稿时间： | 2002-12-18 |
DUAL RECIPROCITY BOUNDARY ELEMENT METHOD FOR ANALYZING RAPID SOLIDIFICATION PROCESS OF METAL DROPLETS |
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| GUO Wen LU Wen-Qiang LIU Qiu-Sheng MA Chong-Fang. DUAL RECIPROCITY BOUNDARY ELEMENT METHOD FOR ANALYZING RAPID SOLIDIFICATION PROCESS OF METAL DROPLETS[J]. Journal of Engineering Thermophysics, 2003, 24(6): 1028-1030 | |
| Authors: | GUO Wen LU Wen-Qiang LIU Qiu-Sheng MA Chong-Fang |
| Abstract: | The axisymmetric dual reciprocity boundary element method is developed to calculate phase-change heat transfer problems with the nonlinear boundary conditions. The rapid solidification of metal droplets in the spray forming process and microgravity falling tube or tower, which considers both the external extraction of heat carried out through convective and radiative heat transfer and the internal heat condition combined with the nucleation -controlled solidification kinetics, are simulated by the method. The undercooling temperature, the time to recalescence , the time-marching maps of temperature fields and phase -change interfaces are presented in this paper. |
| Keywords: | rapid solidification DRBEM undercooling temperature |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |