A numerical study on the hydrodynamics of ferrofluid flow and mass transfer characteristics in a Y‐type micromixer is performed. Computational fluid dynamics (CFD) simulation is accomplished to survey the behavior of ferrofluid flow subject to an external magnetic field and to specify its effect on the mass transfer between two immiscible liquid phases. The geometric reconstruction scheme (Geo‐Reconstruct) based on piecewise linear interpolation is applied to reconstruct the two‐phase interface. The results of CFD modeling are validated by experimental data, and good agreements are achieved, with a maximum relative error for the extraction efficiency of about 7.52 %. This research work shows that ferrofluid stimulation by a magnetic field can be an efficient mixing factor in microdevices.

中文翻译：

---

磁场中磁性纳米粒子的刺激在微型混合器中混合和传质的数值研究

对Y型微混合器中铁磁流体的流动动力学和传质特性进行了数值研究。计算流体动力学（CFD）模拟的完成是为了调查铁磁流体在外部磁场作用下的行为，并确定其对两种不混溶液相之间质量传递的影响。应用基于分段线性插值的几何重构方案（Geo-Reconstruct）来重构两相界面。实验数据验证了CFD建模的结果，并取得了良好的一致性，最大相对误差约为7.52％。这项研究工作表明，磁场对铁磁流体的刺激可能是微型设备中的有效混合因子。