[1]王武,何德坪,舒光冀.金属单向凝固过程中固—液界面前沿液相中温度梯度的确定[J].东南大学学报(自然科学版),1985,15(1):33-43.[doi:10.3969/j.issn.1001-0505.1985.01.003]
 Wang Wu He Deping Shu Guangji.The Determination of Temperature Gradient in Front of the Solid-Liquid Interface during Unidirectional Solidification of Metals[J].Journal of Southeast University (Natural Science Edition),1985,15(1):33-43.[doi:10.3969/j.issn.1001-0505.1985.01.003]
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金属单向凝固过程中固—液界面前沿液相中温度梯度的确定()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
15
期数:
1985年第1期
页码:
33-43
栏目:
本刊信息
出版日期:
1985-03-20

文章信息/Info

Title:
The Determination of Temperature Gradient in Front of the Solid-Liquid Interface during Unidirectional Solidification of Metals
作者:
王武何德坪舒光冀
南京工学院机械工程系八○级; 南京工学院机械工程系; 南京工学院机械工程系 研究生; 讲师; 教授
Author(s):
Wang Wu He Deping Shu Guangji
Department of Mechanical Engineering
关键词:
凝固过程 温度梯度 温度分布规律 液相 固一液界面 固液界面 回归分析 误差估计 相对误差 温度场
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1985.01.003
摘要:
本文建立了单向凝固过程的动态模型,推导出凝固试样内固—液界面前方液相中一维穗态温度场的一般表达式。提出了精确确定固—液界面前沿液相中的温度梯度G_L的方法,并用动态测试法实测了液相温度,由回归分析求得T_L—Z′关系式,进而求得G_L=(dT_L)/(dZ′)|Z′=0。实验结果与理论解析结果十分吻合。为检验所制定的G_L确定方法的精度,应用数理统计对G_L确定值进行了误差估计计算。
Abstract:
A general expression of the temperature distribution in the liquid along the direction af growth at stieady state is derived through a proposed dynamic model. By the use of a newly designed mothod, the actural temperatures in the liquid were precisely measured and a T_L-Z’ regression equation was obtained, according to Which the temperature gradient in front of the interface G_L=(dT_L/dZ’)|z’=0 was evaluated, The experiments show that the measured results are in good agreement with those obtained from theorectical analysis. To check up on the accuracy of the method used, the maximun relative error was estimated by mathematical statistics.

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更新日期/Last Update: 2013-05-01