An analytical model is presented to predict the equivalent thermal conductivity of the pyramidal lattice core sandwich structure. The equivalent thermal conductivity of the pyramidal lattice core sandwich structure is attributed to both conduction and radiation. The equivalent thermal conductivity caused by heat conduction is evaluated based on Fourier's law. The configuration factor is calculated by the Monte Carlo method considering the effect of radiation in all directions. The predictions are compared with the previous analytical and experimental results. It reveals that the present model is more accurate in estimating the equivalent thermal conductivity for the pyramidal lattice core sandwich structures. The effects of the geometrical parameters, solid emissivity and temperature on the equivalent thermal conductivity of the pyramidal lattice core sandwich structures are well discussed.

中文翻译：

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基于蒙特卡罗模型预测金字塔晶格核心夹层结构的等效导热系数


提出了一个分析模型来预测金字塔晶格核心夹层结构的等效导热率。金字塔晶格核心夹层结构的等效导热率归因于传导和辐射。根据傅里叶定律评估热传导引起的等效热导率。配置因子采用蒙特卡罗方法计算，考虑各个方向辐射的影响。将预测与之前的分析和实验结果进行比较。它表明，当前模型在估计金字塔晶格核心夹层结构的等效导热率方面更加准确。讨论了几何参数、固体发射率和温度对金字塔晶格芯夹层结构等效导热率的影响。