In this study, the Eulerian-Lagrangian method is employed to inspect the impact of nanoparticle migration on the hydrothermal and entropy generation features of Fe₃O₄–water nanofluid in a ribbed-blocked microchannel with two different arrangements. The results are compared with those of the plain microchannel at different volumes of flow rate and nanoparticle concentration. It was found that the nanoparticle migration results in an increase in the pressure drop, friction factor, heat transfer coefficient, overall hydrothermal performance of nanofluid as well as the thermal and frictional entropy generations. In addition, it was depicted that the increase of mass flow rate is associated with the rise of pressure drop, heat transfer coefficient and frictional entropy generation and the decrease of friction factor and thermal entropy generation. Moreover, the augmentation of nanoparticle volume fraction was associated with increasing pressure drop, friction factor, and heat transfer coefficient and the decrease of thermal entropy generation. Finally, it was found that for all the examined cases, the overall hydrothermal performance of the Fe₃O₄-water nanofluid is better than the pure water.

本研究采用欧拉-拉格朗日方法考察纳米粒子迁移对Fe ₃ O ₄热液和熵产生特征的影响– 具有两种不同排列的肋状封闭微通道中的水纳米流体。将结果与不同体积流速和纳米颗粒浓度下的普通微通道的结果进行比较。发现纳米颗粒迁移导致压降、摩擦系数、传热系数、纳米流体的整体水热性能以及热和摩擦熵产生的增加。此外，还描述了质量流量的增加与压降、传热系数和摩擦熵产生的增加以及摩擦因数和热熵产生的减少有关。此外，纳米颗粒体积分数的增加与压降、摩擦系数、传热系数和热熵产生的减少。最后，发现对于所有检查的情况，Fe 的整体水热性能₃ O _{4 -}水纳米流体优于纯水。