A study on the 3D fluid flow of MHD micropump

Azimi-Boulali, Javid; Zakeri, Manizhe; Shoaran, Maryam

doi:10.1007/s40430-019-1979-1

Cited by 9 publications

(6 citation statements)

References 29 publications

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“…As mentioned in the result sections, the novel arrayed electromagnetic pump structure could create any type of velocity and pressure profile, which is necessary in various applications. In other works, velocity profiles are not controllable and are highly influenced by the fluid and pump parameters [10,18,[21][22][23]. Figure 21a shows the velocity profile in different Hartman numbers (different fluids).…”

Section: Discussionmentioning

confidence: 99%

“…Zakeri et al in 2019, used finite volume method and numerically studied the effect of geometrical parameters, such as depth, width, and length of the side electrodes, on micro pump performances with a rectangular channel. They showed that a wider channel with long electrodes could be used in favor of high performance for high flow rates, high pressure, and energyefficient demands [21]. In 2020, Lee et al numerically investigated the effect of flow velocity, applied voltage, magnetic flux density, Hartman number, and so forth on MHD pump performance in microchannel cooling system for heat dissipating element with different nanofluids [22].…”

Section: Introductionmentioning

confidence: 99%

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An electromagnetic arrayed pump to create arbitrary velocity profiles in fluid

et al. 2021

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The present paper is conducted to develop a new structure of an electromagnetic pump capable of controlling the magnetic field in a rectangular channel. Common electromagnetic pumps do not create uniform velocity profiles in the cross-section of the channel. In these pumps, an M-shape profile is created since the fluid velocity in the vicinity of the walls is higher than that in its center. Herein, the arbitrary velocity profiles in the electromagnetic pump are generated by introducing an arrayed structure of the coils in the electromagnetic pump and implementing 3D numerical simulation in the finite element software COMSOL. The dimensions of the rectangular channel are 5.5 × 150 mm2. Moreover, the magnetic field is provided using a core with an arrayed structure made of low-carbon iron, as well as five couples of coils. 20% NaoH solution is utilized as the fluid (conductivity: 40 S/m). The arrayed pump is fabricated and experimentally created an arbitrary velocity profile. The pressure of the pump in every single array is 12 Pa and the flow rate is equal to 3375 mm3/s. According to the results, there is a good agreement between the experimental test carried out herein and the simulated models.Article highlights This is the first time that the idea of arrayed electromagnetic pump is presented. This pump uses a special arrayed core with coils; by controlling the current of each coil and the direction of the currents, the magnetic field under the core could be adjusted. By changing the magnetic field at any position in the width of the channel, the Lorentz force alters, which leads to different velocity and pressure profiles. Using COMSOL multiphysics software, the electromagnetic pump was simulated in real size compared to the experimental model. Subsequently, the simulation model was verified and different velocity profiles were generated by activation and deactivation of different coils. The pressure and velocity curves and contours were extracted. The experimental setup was manufactured and assembled. NaOH solution was utilized as the fluid. Afterwards, different modes of coil activations were investigated and the pressure and velocity profiles of the pump were calculated.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An electromagnetic arrayed pump to create arbitrary velocity profiles in fluid

et al. 2021

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“…Gedik et al [4] numerically investigated MHD pressure induced flow through a pipe in the absence of slip conditions. A numerical simulation based on the finite volume method was employed by Azimi-Boulali et al [5] to investigate a 3D model of Newtonian magnetohydrodynamic fluid flow. Zaman et al [6] presented the exact solution of unsteady MHD fluid flow in a channel under the influence of heat transfer and slip conditions.…”

Section: Introductionmentioning

confidence: 99%

Variable Viscosity and Chemical Reaction Effects on MHD Flow of Radiative Fluid Past a Stretching Sheet in the Presence of Joule Heating

Samuel

Fayemi

2021

ARJOM

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The focus of the present study is to examine chemical reaction and Joule heating effects on steady flow of a viscous radiating fluid in a porous medium under the influence of variable viscosity. The fluid viscosity is assumed to vary exponentially with temperature. The governing equations of ow, heat and mass transfer are transformed into ordinary differential equations using appropriate similarity transformations. The converted ordinary differential equations are then solved numerically by using fourth order Runge-Kutta Fehlberg method. The effects of different pertinent parameters on the flow, heat and mass transfer characteristic are analyzed and discussed in detail through graphs and table. It is observed that larger values of variable viscosity parameter depreciates the fluid velocity.

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“…In another investigation, Patel and Kassegne [5] conduct an analytical effort to investigate different flow channel geometries, effects of nonuniform magnetic and electric fields, Joule heating, and electroosmosis in MHD micropumps; here, they use saline solutions based on sodium chloride (NaCl). The reader can review other investigations on MHD micropumps handling homogeneous single-phase fluids such as the studies conducted by Homsy et al [11], Chatterjee and Amiroudine [16], Bau et al [17], Rivero [18], Azimi-Boulali et al [19], Moghaddam [20], Jian and Chang [21], Mondal and Wongwises [22], and many others cited in these works.…”

Section: Introductionmentioning

confidence: 99%

Viscous micropump of immiscible fluids using magnetohydrodynamic effects and a power-law conducting fluid

Lopez¹,

Roblero²,

Colin³

et al. 2021

Rev. Mex. Fís.

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Small-scale fluid transport methods have grown significantly in recent years, mainly in applications in microfluidic systems. Therefore, the present study analyzes the movement of two-layers of immiscible fluids within a parallel flat plates microchannel. The fluid layers are composed of a Newtonian fluid and a power-law fluid. The pumping is produced by magnetohydrodynamics effects that act on the non-Newtonian conducting fluid dragging the non-conducting Newtonian fluid by viscous forces. Under the consideration of a laminar, incompressible, and unidirectional flow, the dimensionless mathematical model is established by the momentum equations for each fluid, together with the corresponding boundary conditions at solid-liquid and liquid-liquid interfaces. The problem formulation is semi-analytically solved using the Newton-Raphson method. The results are presented as a function of the velocity profiles and flow rate, showing interesting behaviors that depend on the physical and electrical properties of each fluid and flow conditions via the dimensionless parameters such as the flow behavior index, a magnetic parameter related to Lorenz forces, the fluids viscosity ratios and the dimensionless liquid-liquid interface position. This work contributes to the understanding of the various immiscible non-conducting fluids pumping techniques that can be used in microdevices.

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A study on the 3D fluid flow of MHD micropump

Cited by 9 publications

References 29 publications

An electromagnetic arrayed pump to create arbitrary velocity profiles in fluid

An electromagnetic arrayed pump to create arbitrary velocity profiles in fluid

Variable Viscosity and Chemical Reaction Effects on MHD Flow of Radiative Fluid Past a Stretching Sheet in the Presence of Joule Heating

Viscous micropump of immiscible fluids using magnetohydrodynamic effects and a power-law conducting fluid

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