| 合金凝固传热、传质和液相流动的数值模拟及宏观偏析的预测 |
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| 引用本文： | 徐达鸣,李庆春.合金凝固传热、传质和液相流动的数值模拟及宏观偏析的预测[J].金属学报,1990,26(4):125-129. |
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| 作者姓名： | 徐达鸣 李庆春 |
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| 作者单位： | 哈尔滨工业大学铸造教研室，哈尔滨工业大学 |
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| 摘 要： | 将合金铸锭凝固过程中的液相区、凝固区和固相区均视为一种连续介质,建立了适用于描述金属合金凝固传输现象的统一数学模型。对Al-4.5％Cu铸锭凝固过程中的温度场、流场和宏观成分分布进行了数值模拟,并进行了实验验证。
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| 关 键 词： | 数值模拟 传热 传质 Al-Cu合金 偏析 |
| 收稿时间： | 1990-04-18 |
| 修稿时间： | 1990-04-18 |
NUMERICAL SIMULATION OF HEAT, MASS AND MOMENTUM TRANSFERS IN METALLIC INGOTS AND PRE-DICTION OF MACROSEGREGATION |
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| XU Daming,LI Qingchun Harbin Institute of Technology associate professor,Faculty of Casting,Harbin Institute of Technology,Harbin.NUMERICAL SIMULATION OF HEAT, MASS AND MOMENTUM TRANSFERS IN METALLIC INGOTS AND PRE-DICTION OF MACROSEGREGATION[J].Acta Metallurgica Sinica,1990,26(4):125-129. |
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| Authors: | XU Daming LI Qingchun Harbin Institute of Technology associate professor Faculty of Casting Harbin Institute of Technology Harbin |
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| Abstract: | A continuum model and numerical method were established for des-cription of heat, mass and momentum transfers as well as macrosegregation forma-tions in metallic alloy ingots. Numerical simulation of temperature, composition andliquid flow fields during solidification were made on an Al-4.5%Cu ingot. Themodel and numerical method were verified through two experiments. |
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| Keywords: | numerical simulation heat transfer mass transfer momentum transfer Al-Cu alloy macrosegregation |
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