3D Analysis of Magnetohydrodynamic (MHD) Micropump Performance Using Numerical Method

Derakhshan, Shahram; Yazdani, Kaveh

doi:10.1017/jmech.2015.39

Cited by 20 publications

(17 citation statements)

References 15 publications

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“…With the assumption of constant electric field, magnetic field, blood thermo-physic properties, laminar flow and for fully developed flow we have [1,3]:…”

Section: Governing Equationsmentioning

confidence: 99%

“…With respect to existent magnetic field and applied electric current density in Lorentz equation (2) this value depends on fluid's electrical conductivity σ, mean velocity V, magnetic field intensity B, and employed electric field E [1,16].…”

Section: Governing Equationsmentioning

confidence: 99%

“…This recursive process continues while the velocity value in iteration number N has a very small deviation from iteration of level N-1. It is another description of convergence [1,2].…”

Section: Governing Equationsmentioning

confidence: 99%

“…Therefore, its amplitude cannot be increased from 2000 V/m. By increasing this field for unlimited time, temperature highly rises [1,12]. In Figure 10 the effect of electromagnetic field in velocity profile in E=350 V/m of electrical field and flux density of 0.5 to 2.5 T is provided.…”

Section: Velocity Profile By Applying Constant Electromagnetic Fieldmentioning

confidence: 99%

“…Magneto-Hydrodynamic (MHD) theory is based on exerting perpendicular electromagnetic fields on motion of electrical conducting fluid [1][2][3][4][5][6]. According to Lorentz principle, stimulating these fields lead to the appearance of a force along the fluid path [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Fluctuation in Blood Velocity under Applied Electromagnetic Pulse Fields

Roozbeh¹

2017

IJBSBE

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The definition of the "Lorentz Force" comes from applying electrical and magnetic fields straight to fluid direction. This force is an elemental factor for magnetohydrodynamic pumps. Based on energy and linear momentum conservation laws, we can derive the governing equations for our problem. Accordingly, MHD pump performance is impacted with any small fluctuation in electrically conducting fluid and current density in blood carrying arteries. After implementing constant and transient electromagnetic pulse fields, we were interested to employ finite element approach to study velocity profile and temperature distribution of the flowing blood. The novelty of this work is considering the edge effect, which was not considered in any other previous works. Results show that transient electromagnetic fields with stronger pulses increase the fluid velocity with lower fluctuations in various temperatures. Through defining an allowable criterion for temperature range, these results will be extensively applicable in drug delivery and other biomedical engineering applications.

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“…With the assumption of constant electric field, magnetic field, blood thermo-physic properties, laminar flow and for fully developed flow we have [1,3]:…”

Section: Governing Equationsmentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

“…This recursive process continues while the velocity value in iteration number N has a very small deviation from iteration of level N-1. It is another description of convergence [1,2].…”

Section: Governing Equationsmentioning

confidence: 99%

Section: Velocity Profile By Applying Constant Electromagnetic Fieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fluctuation in Blood Velocity under Applied Electromagnetic Pulse Fields

Roozbeh¹

2017

IJBSBE

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Heat transfer of MHD flow over a wedge with a surface of mutable temperature

MFarsi

Moghimi

2023

Heat Trans

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The objective of this study is to investigate the thermal distribution and heat transfer in the boundary layer of a wedge with a variable surface temperature in the presence of a magnetic field. To achieve this, we first used similarity solutions to transform the governing equations of magnetohydrodynamic flow for variable surface temperature conditions into ordinary differential equations. We then solved the resulting equations using the collocation method (CM) with different intensity magnetic fields and varying Hartmann (Ha) numbers and surface temperatures. The CM was further modified by incorporating boundary conditions. The results obtained from the solved equations were validated and compared with those obtained using the numerical Runge–Kutta fourth‐order method and previous literature. Finally, we investigated the impact of various parameters on the friction coefficient (Cf) and Nusselt number (Nu), including the power of variable surface temperature (n), Prandtl (Pr) number, Eckert (Ec) number, the half angle of the wedge (φ), and Ha number. We considered values for these parameters within the ranges 0.5 ≤ n ≤ 1.5, 0.5 ≤ Pr ≤ 5, 0.001 ≤ Ec ≤ 0.002, 15° ≤ φ ≤ 60°, and 0 ≤ Ha ≤ 3. Our findings indicate that the slope of the boundary layer increases with increasing Ha or φ, resulting in an increase in Cf on the surface by up to 526%. The Nu number, calculated using the energy equation, increases up to 91.7%, 39.8%, and 1.43% with increasing Ha, n, and Ec, respectively, resulting in faster growth of the thermal boundary layer, which causes the thickness to decrease and the Nu number to rise. However, as φ increases, the Nu number drops on the surface, and the heat transfer behavior remains similar to that observed previously.

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A new electromagnetic micromixer for the mixing of two electrolyte solutions

Fan

Kim

2019

J Mech Sci Technol

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3D Analysis of Magnetohydrodynamic (MHD) Micropump Performance Using Numerical Method

Cited by 20 publications

References 15 publications

Fluctuation in Blood Velocity under Applied Electromagnetic Pulse Fields

Fluctuation in Blood Velocity under Applied Electromagnetic Pulse Fields

Heat transfer of MHD flow over a wedge with a surface of mutable temperature

A new electromagnetic micromixer for the mixing of two electrolyte solutions

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