Electromagnetohydrodynamic flow in a rectangular microchannel

Cheng, Qi; Wu, Chengfa

doi:10.1016/j.snb.2018.02.107

Cited by 13 publications

(7 citation statements)

References 41 publications

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“…Hoshyargar et al [407] determined the velocity and concentration profiles in fully developed electroosmotic flow in slit microchannels occurring dispersion effects. After that, Sun et al [408], Yang et al [57], Sarkar et al [409], and Qi and Wu [410] presented the rotating electroosmotic and pressure-driven flow in rectangular microchannels. Their analyses adopted the Debye-Hückel approximation to estimate the velocity and temperature distributions at a constant wall temperature and wall heat flux in the electric and magnetic fields.…”

Section: Effects Of Both Electric and Magnetic Fieldsmentioning

confidence: 99%

Review and Analysis of Electro-Magnetohydrodynamic Flow and Heat Transport in Microchannels

Kundu

Saha

2022

Energies

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This paper aims to develop a review of the electrokinetic flow in microchannels. Thermal characteristics of electrokinetic phenomena in microchannels based on the Poisson–Boltzmann equation are presented rigorously by considering the Debye–Hückel approximation at a low zeta potential. Several researchers developed new mathematical models for high electrical potential with the electrical double layer (EDL). A literature survey was conducted to determine the velocity, temperature, Nusselt number, and volumetric flow rate by several analytical, numerical, and combinations along with different parameters. The momentum and energy equations govern these parameters with the influences of electric, magnetic, or both fields at various preconditions. The primary focus of this study is to summarize the literature rigorously on outcomes of electrokinetically driven flow in microchannels from the beginning to the present. The possible future scope of work highlights developing new mathematical analyses. This study also discusses the heat transport behavior of the electroosmotically driven flow in microchannels in view of no-slip, first-order slip, and second-order slip at the boundaries for the velocity distribution and no-jump, first-order thermal-slip, and second-order thermal-slip for the thermal response under maintaining a uniform wall-heat flux. Appropriate conditions are conferred elaborately to determine the velocity, temperature, and heat transport in the microchannel flow with the imposition of the pressure, electric, and magnetic forces. The effects of heat transfer on viscous dissipation, Joule heating, and thermal radiation envisage an advanced study for the fluid flow in microchannels. Finally, analytical steps highlighting different design aspects would help better understand the microchannel flow’s essential fundamentals in a single document. They enhance the knowledge of forthcoming developmental issues to promote the needed study area.

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Section: Effects Of Both Electric and Magnetic Fieldsmentioning

confidence: 99%

Review and Analysis of Electro-Magnetohydrodynamic Flow and Heat Transport in Microchannels

Kundu

Saha

2022

Energies

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“…EMHD is frequently used to control flow through microchannels in microfluidic devices, which have applications in particle separation, heat exchange, biochemistry, and medicine. Researchers have investigated EMHD and its many facets 10–12 . Another crucial area is electro‐osmotic flow (EOF), 13,14 in which fluids move in bulk as a result of viscous action when free ions travel over solid walls under the effect of an externally supplied electric field.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have investigated EMHD and its many facets. [10][11][12] Another crucial area is electro-osmotic flow (EOF), 13,14 in which fluids move in bulk as a result of viscous action when free ions travel over solid walls under the effect of an externally supplied electric field. EOF has a wide range of uses in medical science, including the separation of membranes and the elimination of heavy metals from soils.…”

Section: Introductionmentioning

confidence: 99%

Assessment of heat transfer in large parallel plates with a narrow gap maintained at a constant temperature

et al. 2023

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Investigations are conducted on electromagnetohydrodynamic (EMHD) flow and heat transfer in a third‐grade fluid flowing through large parallel plates, which are maintained at constant temperatures. The impact of convective heat transmission is disregarded since the space between the plates is small. The influence of viscous dissipation is considered. Despite being addressed for Newtonian fluids, the conduction problem with the viscous dissipation effect is not examined in third‐grade fluids for EMHD flow and heat transfer behavior. The least‐square method is adopted to solve nondimensional, nonlinear momentum and energy conservation equations to get the dimensionless velocity, temperature distribution, and heat flux. Temperature and heat flux are investigated in relation to the third‐grade fluid parameter, the Hartmann number, the electric field parameter, and the Brinkman number. The findings show a rise in the Brinkman number dramatically increases heat transfer from both walls, necessitating cooling of both plates. The heat flow from both walls increases as the parameters of third‐grade fluid increases.

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“…Wang et al [10] demonstrated by an experiment that MHD micropumps can be used for efficient pumping of biological cells. In addition to experimental studies, there have been many theoretical studies on EMHD flow of Newtonian [11][12][13][14][15] and non-Newtonian fluids in recent years [16][17][18][19][20][21][22]. How to increase the velocity of EMHD flow has always been one of the most important research directions of scientists.…”

Section: Introductionmentioning

confidence: 99%

Combined electromagnetohydrodynamic flow in microchannels with consideration of the surface charge-dependent slip

Xing¹,

Liu²

2023

Phys. Scr.

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In microscale systems, hydrodynamic slip is considered to significantly influence the fluid flow field. Existing theories of electromagnetohydrodynamic flow in hydrophobic microchannels have postulated a constant slip length and ignored the effect of the surface charge on slip. In this study, we extended prior models by considering a combined pressure-driven and electromagnetohydrodynamic flow in microchannels with consideration of surface charge-dependent slip. An analytical solution for this simple model was derived. After a detailed discussion of the obtained results, we demonstrate that the more realistic surface-charge-dependent case has smaller velocities and flow rates than the surface-charge-independent slip case. Considering the effect of the surface charge on slip, the flow rate can be reduced by up to 7% in the currently selected parameter range. Our results are useful for optimizing electromagnetohydrodynamic flow models in microchannels.

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Electromagnetohydrodynamic flow in a rectangular microchannel

Cited by 13 publications

References 41 publications

Review and Analysis of Electro-Magnetohydrodynamic Flow and Heat Transport in Microchannels

Review and Analysis of Electro-Magnetohydrodynamic Flow and Heat Transport in Microchannels

Assessment of heat transfer in large parallel plates with a narrow gap maintained at a constant temperature

Combined electromagnetohydrodynamic flow in microchannels with consideration of the surface charge-dependent slip

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