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Structure of Liquids and a Liquid Thermal Conductivity Model
Author(s): 
Pages: 516-520
Year: Issue:  6
Journal: JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES

Keyword:  热导率模型液体结构晶胞参数;
Abstract: 为了深入探讨液体结构对热导率的影响,假设液体由微型晶粒和空穴组成,在有效结构理论基础上用晶体学和气体分子运动论的方法推导出一个双参数热导率模型:λ= D T4/7V2s/(V-Vs)2/7V+C V-Vs/T/M/V V2/3c Ωg,该模型能够较好地适用于不同液体物质热导率的关联。由关联数据定性讨论了特征参数D和C的物理意义,解释了特征参数D和物质晶胞参数间的良好定量关系。结果表明模型参数的数值和符号较好地表达了液体的结构特点和导热机理,进一步说明了该热导率模型的合理性。
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