| 多孔不均匀性金属混合物的传热研究 |
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| 引用本文： | 杨泽亮 刘承东 杨元俊. 多孔不均匀性金属混合物的传热研究[J]. 华南理工大学学报(自然科学版), 1997, 0(6): 79-84 |
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| 作者姓名： | 杨泽亮 刘承东 杨元俊 |
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| 作者单位： | [1]华南理工大学电力学院广州510641 [2]广州市地下铁道设计研究院 |
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| 摘 要： | 提出在一维导热模型下，利用平板比较法同时测定多孔不均匀性金属混合物的等效导热系数和导温系数的方法，并通过常功率平面热源法给予了验证。同时为结构复杂、固体物料分布无规律、孔隙形状无规则的多孔物质的热物性研究提供了思路和方法，使通常只用于测定绝缘材料热物性的方法得到了拓展。
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| 关 键 词： | 多孔物质 热扩散率 等效导热系数 平板比较法 常功率平面热源法 各向异性 |
A STUDY ON THE HEAT CONDUCTION OF THE POROUS AND INHOMOGENEOUS METAL MIXTURES |
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| Yang Zeliang Liu Chengdong Yang Yuanjun. A STUDY ON THE HEAT CONDUCTION OF THE POROUS AND INHOMOGENEOUS METAL MIXTURES[J]. Journal of South China University of Technology(Natural Science Edition), 1997, 0(6): 79-84 |
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| Authors: | Yang Zeliang Liu Chengdong Yang Yuanjun |
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| Affiliation: | Yang Zeliang Liu Chengdong * Yang Yuanjun |
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| Abstract: | This paper reveals the experimental results in measuring the equivalent thermal conductivity and the thermal diffusivity of the porous and inhomogeneous metal mixtures after the one dimension conduction model. It presents an approach to the thermophysics study of such a kind of metal mixtures with sophisticated structures and irregularly dispersed solid particles and irregularly shaped pores. It also advances a theory as well as a method for the simultaneous measurement of the thermal conductivity and diffusivity by means of the plate comparison method. Both the theory and the method have been verified by the plane heat source method with constant heat rate and have thus proved to be applicable for measuring both dielectric and metal materials. |
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| Keywords: | porous material thermal diffusivity equivalent thermal conductivity plate comparison method a plane heat source method with constant heat rate anisotropy |
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