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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >Periodic homogenization for heat, air, and moisture transfer of porous building materials
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Periodic homogenization for heat, air, and moisture transfer of porous building materials

机译:多孔建筑材料的热,空气和水分转移的周期性均匀化

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摘要

In this work, a macroscopic model of hygrothermal transfers in porous building materials was developed, using periodic homogenization, where the air infiltration was added to the classical mass and energy balance equations written at the microscopic scale. The corresponding infiltration, hygric, and thermal input parameters were carefully identified. Numerical calculations of thermal and diffusion tensors were performed on a representative concrete elementary cell. Further, the diffusion tensor was compared to the equivalent experimental results available in the literature, and its sensitivity to the water content variations and porosity has been evaluated on the concerned elementary cell.
机译:在这项工作中,使用周期性均化产生多孔建筑材料中的湿热转移的宏观模型,其中将空气渗透添加到微观尺度上写入的经典质量和能量平衡方程中。 仔细识别相应的渗透,湿润和热输入参数。 在代表性的混凝土基本细胞上进行了热和扩散张力的数值计算。 此外,将扩散张量与文献中可获得的等同实验结果进行比较,并且在有关基本细胞上评估了对水含量变化和孔隙率的敏感性。

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