A parallelizable mesh-free approach for simulation of heat conduction in ferromagnetic particulate materials under magnetic field effect
A parallelizable mesh-free approach for simulation of heat conduction in ferromagnetic particulate materials under magnetic field effect
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DOI：
10.1016/j.ijheatmasstransfer.2021.121343
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发表时间：
2021-08
影响因子：
5.2
通讯作者：
R. Bahadori;Hector Gutierrez;S. Shafiee
中科院分区：
文献类型：
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作者：
R. Bahadori;Hector Gutierrez;S. Shafiee
本文提出了一种新的无网格方法来求解有磁场和无磁场作用下的铁磁性粉末颗粒床区域内的传导传热方程。所提出的方法是基于概率的方法来定义各种配置的能量传递路径周围的任意粒子称为“本地包装元素”，并与实验数据的结果进行了比较。此外，蒙特-卡罗方法被用来计算具有任意形状的永磁体在其周围的任意点的磁场，并将结果与测量结果进行比较。在这两种情况下，建议的无网格方法显示出良好的协议与现有的经验结果。所提出的方法，然后用于模拟在铁磁性粉末颗粒床的传导传热的外部磁场的效果。它的结论是，磁场的存在下，增加了铁磁性粉末床域的热扩散，通过增加热导率。
A novel mesh-free approach has been developed to solve the conduction heat transfer equations in a particulate bed domain of ferromagnetic powder with and without magnetic field effect. The proposed method is based on a probabilistic approach to defining various configurations of energy transfer paths around an arbitrary particle called “local packed element”, and results are compared with experimental data. Furthermore, a Monte-Carlo approach is used to calculate the magnetic field of a permanent magnet with an arbitrary shape on any arbitrary point around it, and the outcome is also compared against measurements. In both cases, the proposed mesh-free method shows excellent agreement with available empirical results. The proposed method is then used to model the effect of an external magnetic field in the conductive heat transfer in a particulate bed of ferromagnetic powder. It is concluded that the presence of a magnetic field increases thermal diffusion in ferromagnetic powder bed domains by increasing thermal conductivity.