Ferrofluid drop impacts and Rosensweig peak formation in a non-uniform magnetic field

Cordwell, Amelia; Chapple, Alex; Chung, Stephen S.; Wells, Frederick S.; Willmott, Geoff R.

doi:10.1039/d3sm00701d

Cited by 2 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Upreti 等 [23] 研究了在低雷诺数下使用磁性纳米流体在外部磁场存在的情况下波浪型微通道中的传热特性, 发现随着磁普朗特数值的增大, 在感应磁场的轮廓中观察到双重行为, 而血液纳米流体的速度轮廓下降. Yashkun等 [24] 研究了具有热辐射的多孔介质中吸力和磁场在滞止点处通过拉伸和收缩薄片对纳米流体流动的影响, 并分析了参数对壁面摩擦、努塞尔数和舍伍德数的影响. Mishra等 [25] 研究了混合纳米流体流经倾斜通道对合成纤毛进行熵产分析, 目的是研究熵产优化和传热效率. 结果表明, 对于更大的拉伸或收缩瑞利数和质量蒸腾值, 横向和切向速度都更大.…”

Section: 磁流体动力学(Mhd)在生物医学和工程中受unclassified

Electroosmotic flow and heat transfer characteristics of a class of biofluids in microchannels at high Zeta potential

Mu,

Cui,

Chen

et al. 2024

Acta Phys. Sin.

View full text Add to dashboard Cite

Peristalsis is an important dynamic phenomenon in the field of biomedical research, and has great application prospects in microscale fluids. In recent years, this biomimetic (peristaltic) phenomenon has gained widespread attention due to its large-scale applications in various medical and industrial fields, such as radiation therapy, peristaltic blood pumps, and drug delivery systems and so on. In this study, the electroosmotic flow and heat transfer characteristics are investigated under high wall Zeta potential and slip boundary conditions for a certain type of biological fluid that satisfies the Newtonian fluid model. Fluid flows under the combined action of external electric field, magnetic field, and Joule heating. Firstly, without using the Debye-Hückel linear approximation, the numerical solutions are given by using the Chebyshev spectral method for the nonlinear Poisson-Boltzmann equation, the fourth-order differen tial equation satisfied by the stream function, and the thermal energy equation. The results are compared with those obtained by using the Debye-Hückel linear approximation to demonstrate the effectiveness of the numerical method used in this study. Secondly, the effects of wall Zeta potential, Hartmann number H, electroosmotic parameter m, slip parameter β are discussed on the flow characteristics, peristaltic pumping, and trapping phenomena under electromagnetic environments, and the influence of Joule heating parameters γ and Brinkman number Br is explored on heat transfer characteristics. The results show that: (1) wall Zeta potential plays an important role in controlling the velocity of fluid peristaltic flow; (2) an increase in electroosmotic parameter m and slip parameter β promotes the flow velocity in the central region of the channel, while an increase in the Hartmann number H resists fluid flow; (3) these flow behaviors exhibit opposite trends near the channel walls; (4) the number of streamlines captured by peristaltic transport decreases with an increase in the Hartmann number H and increases with an increase in the electroosmotic parameter M; (5) an increase in the Joule heating parameter γ and Brinkman number Br leads to temperature elevation.

show abstract

Section: 磁流体动力学(Mhd)在生物医学和工程中受unclassified