| 快速冷却条件下凝固潜热处理模型的研究 |
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| 引用本文： | 姚山,宫雪娜,戴利欣,麻春英,金俊泽,阿布里提·阿布都拉.快速冷却条件下凝固潜热处理模型的研究[J].热科学与技术,2004,3(4):328-331. |
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| 作者姓名： | 姚山 宫雪娜 戴利欣 麻春英 金俊泽 阿布里提·阿布都拉 |
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| 作者单位： | 1. 大连理工大学,材料工程系,辽宁,大连,116024
2. 日本弘前大学,理工学部,弘前,日本 |
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| 基金项目： | 国家自然科学基金
上海宝钢集团公司联合资助(50174009) |
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| 摘 要： | 深入分析了有限差分法模拟凝固过程时，采用等效比热法处理相变潜热的原理；从理论和实际计算角度分析了快速冷却条件下常规的等效比热法会造成热量“虚增”，模拟计算结果失真的原因和影响程度；并进一步建立了快速冷却条件下凝固潜热处理的模型。计算结果表明，该模型可以充分保证模拟计算的精度和效率。
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| 关 键 词： | 等效比热法 相变潜热 快速冷却 凝固潜热处理 温度补偿 金属凝固 |
| 文章编号： | 1671-8097(2004)04-0328-04 |
| 修稿时间： | 2004年8月4日 |
Mathematical model of solidification latent heat under high cooling rate |
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| YAO Shan,GONG Xue-na,DAI Li-xin,MA Chun-ying,JIN Jun-ze,ABULITI Abudula.Mathematical model of solidification latent heat under high cooling rate[J].Journal of Thermal Science and Technology,2004,3(4):328-331. |
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| Authors: | YAO Shan GONG Xue-na DAI Li-xin MA Chun-ying JIN Jun-ze ABULITI Abudula |
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| Abstract: | The equivalent specific heat method for calculation of the solidification latent heat was analyzed for simulation of the solidification process with finite difference method. Heat loss and result distortion under high cooling rate were found if the latent heat was calculated by traditional equivalent specific heat method. A mathematical model was developed to ensure that the latent heat was dealt with appropriately under high cooling rate. Results indicate that the efficiency and the precision of the simulating result can be improved with the new model. |
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| Keywords: | solidification latent heat equivalent specific heat method high cooling rate temperature compensation |
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