Investigation of thermal behavior and fluid motion in DC magnetohydrodynamic pumps

Kiyasatfar, Mehdi; Pourmahmoud, Nader; Golzan, Maqsood; Mirzaee, Iraj

doi:10.2298/tsci110826089k

Cited by 19 publications

(10 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flow rate can be increased either by increasing applied current, keeping magnetic flux constant or by increasing magnetic flux while keeping the applied current constant to enhance the pump performance. Similar trends have been observed by previously conducted studies [16]. For low Hartmann numbers, the velocity increased with an increase in the Hartmann number.…”

Section: Magnetohydrodynamic Pump (Mhd) Performancesupporting

confidence: 91%

“…The authors presented optimization of mean Nusselt number using orthogonal array optimization. Kiyasatfar et al [16] investigated thermal behavior and fluid motion in direct current (DC) MHD pump by varying magnetic flux density, applied current and channel size. The authors found that the maximum velocity increases with increase in applied current and as Hartmann number increases the velocity profile becomes flatter.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Investigations on Magnetohydrodynamic Pump Based Microchannel Cooling System for Heat Dissipating Element

et al. 2020

View full text Add to dashboard Cite

Numerical investigations are performed on the magnetohydrodynamic (MHD) pump-based microchannel cooling system for heat dissipating element. In the present study, the MHD pump performance is evaluated considering normal current density, magnetic flux density, volumetric Lorentz force, shear stress and pump flow velocity by varying applied voltage and Hartmann number. It is found that for a low Hartmann number, the Lorentz force increases with an increase in applied voltage and Hartmann number. The velocity distribution along dimensionless width, the shear stress distribution along dimensionless width, the magnetic flux density along the dimensionless width and radial magnetic field distribution showed symmetrical behavior. The MHD pump-based microchannel cooling system performance is evaluated by considering the maximum temperature of the heat dissipating element, heat removal rate, efficiency, thermal field, flow field and Nusselt number. In addition, the influence of various nanofluids including Cu-water, TiO2-water and Al2O3-water nanofluids on heat transfer performance of MHD pump-based microchannel is evaluated. As the applied voltage increased from 0.05 V to 0.35 V at Hartmann number 1.41, the heat removal rate increased by 39.5%. The results reveal that for low Hartmann number, average Nusselt number is increasing function of applied voltage and Hartmann number. At the Hartmann number value of 3.74 and applied voltage value of 0.35 V, average Nusselt numbers were 12.3% and 15.1% higher for Cu-water nanofluid compared to TiO2-water and Al2O3-water nanofluids, respectively. The proposed magnetohydrodynamic microcooling system is effective without any moving part.

show abstract

Section: Magnetohydrodynamic Pump (Mhd) Performancesupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Numerical Investigations on Magnetohydrodynamic Pump Based Microchannel Cooling System for Heat Dissipating Element

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Few research studies about the MHD effect on micro-channels noticed the improvement of their hydraulic and thermal behavior. The decrease of the gradient of velocity at the wall with a rise in the index of Power-law flow was observed in the flow of non-Newtonian fluid flow in a microchannel under a transfer magnetic field [85]. The increment of the gradient of velocity near the wall and reduction of maximum velocity was found with the rising Hartmann number.…”

Section: Figure 21mentioning

confidence: 83%

Recent Advancements in Thermal Performance Enhancement in Microchannel Heatsinks for Electronic Cooling Application

Korasikha¹,

Sharma²,

Rao³

et al. 2021

Heat Transfer - Design, Experimentation and Applications

View full text Add to dashboard Cite

Thermal management of electronic equipment is the primary concern in the electronic industry. Miniaturization and high power density of modern electronic components in the energy systems and electronic devices with high power density demanded compact heat exchangers with large heat dissipating capacity. Microchannel heat sinks (MCHS) are the most suitable heat exchanging devices for electronic cooling applications with high compactness. The heat transfer enhancement of the microchannel heat sinks (MCHS) is the most focused research area. Huge research has been done on the thermal and hydraulic performance enhancement of the microchannel heat sinks. This chapter’s focus is on advanced heat transfer enhancement methods used in the recent studies for the MCHS. The present chapter gives information about the performance enhancement MCHS with geometry modifications, Jet impingement, Phase changing materials (PCM), Nanofluids as a working fluid, Flow boiling, slug flow, and magneto-hydrodynamics (MHD).

show abstract

“…One of them is also Attia [4] who investigated the Hall current effects on the velocity and temperature fields of an unsteady Hartmann flow. Recently, Kiyasatfar et al [5] presented investigation of thermal behavior and fluid motion in DC MHD pumps, Chandrasekhar and Sharma [6] presented heat transfer of a nanofluid in a circular duct, while Abou-Zeid [7] gives the solution for MHD non-Newtonian nanofluid flow through a porous medium in eccentric annuli.…”

Section: Introductionmentioning

confidence: 99%

Flow and heat transfer of three immiscible fluids in the presence of electric and inclined magnetic field

et al. 2018

View full text Add to dashboard Cite

The MHD flow of three immiscible fluids in a horizontal channel with isothermal walls in the presence of an applied electric and inclined magnetic field has been investigated in the paper. All three fluids are electrically conducting, while the channel plates are electrically insulated. The general equations that describe the discussed problem under the adopted assumptions are reduced to ODE and closed-form solutions are obtained in three fluid regions of the channel. Separate solutions with appropriate boundary and interface conditions for each fluid have been determined. The analytical results for various values of the Hartmann number, magnetic field inclination angle, ratio of fluid viscosities, and electrical conductivities have been presented graphically to show their effect on the flow and heat transfer characteristics.

show abstract

Investigation of thermal behavior and fluid motion in DC magnetohydrodynamic pumps

Cited by 19 publications

References 12 publications

Numerical Investigations on Magnetohydrodynamic Pump Based Microchannel Cooling System for Heat Dissipating Element

Numerical Investigations on Magnetohydrodynamic Pump Based Microchannel Cooling System for Heat Dissipating Element

Recent Advancements in Thermal Performance Enhancement in Microchannel Heatsinks for Electronic Cooling Application

Flow and heat transfer of three immiscible fluids in the presence of electric and inclined magnetic field

Contact Info

Product

Resources

About