| 简化瞬态导热物体温度场解析解研究 |
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| 引用本文： | 林瑞泰.简化瞬态导热物体温度场解析解研究[J].天津大学学报(自然科学与工程技术版),1991(4):88-95. |
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| 作者姓名： | 林瑞泰 |
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| 作者单位： | 天津大学热能工程系 |
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| 摘 要： | 将瞬态导热过程中物体内温度分布简化为仅随时间而变的所谓“薄壁”温度场问题进行了进一步的研究。对3种已有的简化判断指标:体内无因次温差Θ_a、体内无因次极限温差Θ_b、物体外壁无因次温度梯度Θ_c的分析表明,采用Θ_a或Θ_c是不合适的,采用Θ_b亦有一定误差,提出以max(|Θ_1|,|Θ_2|)
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| 关 键 词： | 瞬态导热 温度场 解析解 物体 |
SIMPLIFICATION OF THE ANALYTICAL SOLUTION FOR TEMPERATURE DISTRIBUTION OF A BODY IN TRANSIENT HEAT CONDUCTION |
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| Lin Ruitai.SIMPLIFICATION OF THE ANALYTICAL SOLUTION FOR TEMPERATURE DISTRIBUTION OF A BODY IN TRANSIENT HEAT CONDUCTION[J].Journal of Tianjin University(Science and Technology),1991(4):88-95. |
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| Authors: | Lin Ruitai |
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| Institution: | Dept. of Thermophysics Engineering |
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| Abstract: | The problem whether the temperature field solution of a body in transient heat conduction can be obtained by using lumped capacity method or not is further investigeted in this paper. All the criteria such as (?)_a, (?)_b. (?)_cproposed in previous works are analysed. The results show that (?)_aand (?)_care unsuitable to be used as the judgement stardands and the use of (?)_bleads to a big deviation in some regions, A new critirion max (|(?)|_1, |(?)|_2)
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| Keywords: | transient conduction analytical solution simplification |
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