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Molecular dynamics simulation of ferro-nanofluid flow in a microchannel in the presence of external electric field: Effects of Fe3O4 nanoparticles
International Communications in Heat and Mass Transfer ( IF 7 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.icheatmasstransfer.2020.104653
Reza Balali Dehkordi , Davood Toghraie , Mohammad Hashemian , Farshid Aghadavoudi , Mohammad Akbari

Abstract In this study, the effect of nanoparticle variation on water/Fe3O4 nanofluid manner in the presence of an external electric field reported. The results of the physical properties of these structures were estimated by LAMMPS software. The results of these simulations are used in the design of electronic equipment in which nanofluids are used as refrigerants in their structures. Physically, for studying the nanofluid atomic manner, we calculated parameters such as potential energy, density, velocity, and temperature profiles of atomic structures. Our results showed that the nanoparticle is an important parameter to nanofluid movement in a microchannel. Numerically, by increasing the nanoparticle number from 1 to 3, the maximum rate of density, velocity, and temperature profiles increases to 1.675 g/cm3, 0.012 A/ps, and 712 K rates, respectively. Moreover, by increasing the nanoparticle radius, the number density, velocity, and temperature of water/Fe3O4 nanofluids increase. So we conclude that, by adding nanoparticles to base fluid in the presence of the external electric field, the heat transfer will occur with higher quality.

中文翻译:

外电场作用下微通道中铁纳米流体流动的分子动力学模拟:Fe3O4 纳米粒子的影响

摘要 在这项研究中,报告了在外部电场存在下纳米颗粒变化对水/Fe3O4 纳米流体方式的影响。这些结构的物理性质的结果由LAMMPS软件估计。这些模拟的结果用于电子设备的设计,其中纳米流体在其结构中用作制冷剂。在物理上,为了研究纳米流体原子方式,我们计算了原子结构的势能、密度、速度和温度分布等参数。我们的结果表明,纳米颗粒是微通道中纳米流体运动的重要参数。从数值上讲,通过将纳米粒子数量从 1 增加到 3,密度、速度和温度曲线的最大速率增加到 1.675 g/cm3、0.012 A/ps 和 712 K 速率,分别。此外,通过增加纳米颗粒半径,水/Fe3O4 纳米流体的数量密度、速度和温度会增加。因此我们得出结论,通过在存在外部电场的情况下将纳米颗粒添加到基液中,热传递将以更高的质量发生。
更新日期:2020-07-01
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