Molecular dynamics simulation of ferro-nanofluid flow in a microchannel in the presence of external electric field: Effects of Fe_3O_4 nanoparticles

摘要

In this study, the effect of nanoparticle variation on water/Fe_3O_4 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/cm~3, 0.012 A/ps, and 712 K rates, respectively. Moreover, by increasing the nanoparticle radius, the number density, velocity, and temperature of water/Fe_3O_4 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.