在Cheng-Vachon模型的基础上提出了一种针对由连续相和分散相组成的两相复合材料的新导热系数模型.通过引入一个新的参数,即分散相的修正体积含量来改进Cheng-Vachon模型不适用于分散相体积含量较大的缺点.使用新的导热系数模型预测泡沫混凝土的导热系数,与实验结果的对比表明,新的模型可以准确预测泡沫混凝土的导热系数.
参考文献
| [1] | Gibson L J;Ashby M F.Cellular solids:Structure and properties[M].Cambridge:Cambridge University Press,1997 |
| [2] | Collishaw P G;Evans J R G .An assessment of expressions for the apparent thermal conductivity of cellular materials[J].Journal of Materials Science,1994,29(12):486. |
| [3] | Raghavan V R;Martin H .Modelling of two-phase thermal conductivity[J].Chemical Engineering and Processing,1995,34(05):439. |
| [4] | 李翔宇,赵霄龙,郭向勇,曹力强.泡沫混凝土导热系数模型研究[J].建筑科学,2010(09):83-86,74. |
| [5] | Cheng S C;Vachon R I .The prediction of the thermal conductivity of two and three phase solid heterogeneous mixture[J].International Journal of Heat and Mass Transfer,1996,12(03):249. |
| [6] | Shoji Okamoto;Hatsuo Ishida .A new theoretical equation for thermal conductivity of two-phase systems[J].Journal of Applied Polymer Science,1999,72(13):1689. |
| [7] | Singh KJ.;Chaudhary DR.;Singh R. .Heat conduction and a porosity correction term for spherical and cubic particles in a simple cubic packing[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,1998(14):1681-1687. |
| [8] | 周顺鄂,卢忠远,严云.泡沫混凝土导热系数模型研究[J].材料导报,2009(06):69-73,83. |
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