3D Microscale Heat Transfer Model of the Thermal Properties of Wood-Metal Functional Composites Based on the Microstructure
3D Microscale Heat Transfer Model of the Thermal Properties of Wood-Metal Functional Composites Based on the Microstructure
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DOI：
10.3390/ma12172709
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发表时间：
2019-08
期刊：
影响因子：
3.4
通讯作者：
Yuan Chai;Shanqing Liang;Yongdong Zhou;Lanying Lin;F. Fu
中科院分区：
文献类型：
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作者：
Yuan Chai;Shanqing Liang;Yongdong Zhou;Lanying Lin;F. Fu
本文提出了一种模拟木材-金属复合材料中微观传热过程的模型。该模型是通过分析实验样品的微观结构，包括熔融合金浸渍在木材基质。根据材料的热学参数和边界条件，利用Abaqus有限元分析软件建立了微尺度传热分析模型。通过比较模拟和实验得到的温度曲线，对模型进行了实验验证，得到的相关系数为0.96557。然后，我们分析了不同的细胞几何形状和传热条件（传热方向和应用温度）的复合材料的温度分布。单胞模型的热性能与几个传热方程预测的一般趋势吻合得很好。该研究为分析木基复合材料的微尺度传热过程提供了一种方法。此外，模型的骨架特征可用于评价浸渍改性木材的传热机理。
This study presents a model for simulating the microscopic heat transfer processes in a wood-metal composite material. The model was developed by analyzing the microstructure of experimental samples comprising a melted alloy impregnated in a wood matrix. According to the thermal parameters of the materials and the boundary conditions, an analytical model of microscale heat transfer was established using Abaqus finite element analysis software. The model was validated experimentally by comparing temperature curves obtained via simulation and experiments; the resulting correlation coefficient was 0.96557. We then analyzed the temperature distribution of the composite material with different cell geometries and heat transfer conditions (heat transfer direction and applied temperature). The thermal properties of the unit cell models were in good agreement with the general trends predicted by several heat transfer equations. This study provides a method for analyzing the microscale heat transfer process in wood-based composites. In addition, the model framework characteristics can be used to evaluate the heat transfer mechanism of impregnated modified wood.