To illustrate the role of Lorentz force on migration of nanopowders, CVFEM simulation has been reported in current research. The chamber contains hybrid nanomaterial and made up form porous media. Momentum equations have been modified for present paper with adding new source terms. The mentioned method works based on FEM in generation of mesh and calculation of gradient of scalars while it uses FVM approach for employing source terms. Testing with benchmark article shows the nice accuracy. Increase of permeability can enhance the speed of nanopowders and iso-temperature lines shapes become complicated. Impose of MHD creates new force against buoyancy and declines the velocity of the nanomaterial. Also, complication of isotherms declines with rise of Ha. With growth of Da, value of Ψ increases about 111% and 64.2% when Ha=0 and 20, respectively. Also, augment of Ha results in reduction of velocity about 30% and 47.6% when Da=0.01 and 100. Given Da=5Ha=100, Nu for Ra=1e5 is 6.83 times bigger than case with log(Ra)=3. Nu decreases to about 67.28% with increase of Ha when Da=100, Ra=1e5. As Da increases, Nu rises about 62% when Ha=0, Ra=1e3.

中文翻译：

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由于 MHD 的出现模拟纳米粒子的热行为

为了说明洛伦兹力对纳米粉末迁移的作用，目前的研究报告了 CVFEM 模拟。腔室包含混合纳米材料并由多孔介质组成。动量方程已针对本论文进行了修改，并添加了新的源项。上述方法基于有限元法生成网格和计算标量梯度，而使用有限元法来使用源项。使用基准文章进行测试显示了很好的准确性。渗透率的增加可以提高纳米粉末的速度，等温线形状变得复杂。MHD 的施加产生了对抗浮力的新力量并降低了纳米材料的速度。此外，等温线的复杂性随着 Ha 的增加而下降。随着Da的增长，价值Ψ增加约 111% 和 64.2% 时哈=0和 20，分别。此外，Ha 的增加导致速度降低约 30% 和 47.6%，当大=0.01和 100. 给定大=5哈=100, 努为拉=1e5是外壳的 6.83 倍日志(拉)=3. Nu 随 Ha 的增加而降低至约 67.28% 时大=100,拉=1e5. 随着 Da 的增加，Nu 上升约 62%，当哈=0,拉=1e3.