微观偏析对凝固传热传质数值模拟的影响

工程热物理学报 , 2003, 24(1): 115-117.

1.北京科技大学机械工程学院,北京,100083

2.北京科技大学机械工程学院,北京,100083

基金项目: 教育部跨世纪优秀人才培养计划国家自然科学基金(50136020)

EFFECTS OF MICROSEGREGATION ON NUMERICAL SIMULATION OF HEAT AND MASS TRANSFER WITH PHASE CHANGE

总结比较了多种微观偏析模型,并针对反向凝固工艺实验研究的传热传质现象进行了数值模拟.讨论分析了溶质的重新分布对宏观凝固传输过程数值模拟的影响,并与实验数据进行了比较,认为微尺度固液相界面上的溶质再分配对新生相生长的影响不可忽略.

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