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化工学报  2014 

一种计算泡沫金属等效导热系数的新模型

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Abstract:

提出一种针对泡沫金属等效导热系数预测的新模型,该模型基于泡沫金属Kelvin十四面体元胞结构建模,以凹面三棱柱近似金属韧带,并考虑韧带交汇处的结点特点,通过热阻分析得到计算等效导热系数的表达式。研究表明:该模型对充填不同介质的不同材质泡沫金属等效导热系数均有较高的预测精度(平均偏差均小于10%),与文献其他半经验模型相比能更好兼顾预测精确性和通用性。

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