Numerical investigation of water droplet behavior in anode channel of a PEM fuel cell with partial blockage

Jazmi, Ramin; Mohammadzadeh, Kazem; Khaleghi, Hassan; Maddahian, Reza

doi:10.1007/s00419-020-01828-7

Cited by 7 publications

(2 citation statements)

References 33 publications

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“…The energy and momentum equations were discretized using the second-order upwind method (Jazmi et al, 2021), and the SIMPLE algorithm was used for pressure-velocity coupling (Mohammadzadeh et al, 2018). In this research, y + < 96, and scalable wall functions are used.…”

Section: Numerical Modeling and Validation Of The Numerical Methodsmentioning

confidence: 99%

Enhancement of heat transfer in heat sink under the effect of a magnetic field and an impingement jet

Azadi,

Abjadi,

Vahdat Azad

et al. 2023

Front. Mech. Eng.

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Improving the performance of heat sinks is very important in the development of cooling systems. In this study, the use of a novel combination method [magnetic field impingement jet (MF-IJ)] to improve the convective heat transfer coefficient in a designed heat sink is numerically investigated. To model heat transfer, a steady three-dimensional computational fluid dynamics (CFD) approach is employed. Numerical results including velocity and temperature contours, as well as the distribution of wall temperature of the heat sink and also the convective heat transfer coefficient are analyzed. The results show that the use of ferrofluid (Fe3O4/water) flow with an external magnetic field alone increases the heat transfer coefficient by 10%, while the use of an air impingement jet with pure water and without a magnetic field increases it by 22.4%. By using the MF-IJ method, a 32% enhancement of heat transfer coefficient is achieved compared to the case of pure water flow and without MF-IJ. Based on results, at a Reynolds number of 600, by applying the magnetic field intensities of 400, 800, and 1600 G, the average heat transfer coefficient increases by 5.35, 11.77, and 16.11%, respectively. It is also found that the cooling of the heat sink and temperature distribution is improved by increasing the Reynolds number and the inlet mass flow rate of the impingement jet. For instance, at z = 0.02 m, the application of an impingement jet with mass flow rates of 0.001, 0.004, and 0.005 kg/s results in a respective decrease of 0.36, 1.62, and 1.82% in wall temperature. The results of the current study suggest that the combination method of MF-IJ can be utilized for heat sinks with high heat flux generation as a flow control device.

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Section: Numerical Modeling and Validation Of The Numerical Methodsmentioning

confidence: 99%

Enhancement of heat transfer in heat sink under the effect of a magnetic field and an impingement jet

Azadi,

Abjadi,

Vahdat Azad

et al. 2023

Front. Mech. Eng.

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“…High power density, low operating temperature, short start-up time, solid electrolyte and simple fabrication are the most important advantages of PEMFCs. In these cells, the geometry of the channels for the distribution of reactants and the exit of produced water has a great effect on the amount of gas, the distribution of reactive gases, the management of produced water, its removal from the channels and thermal management (Jazmi et al , 2021; Mohammadzadeh et al , 2020). The flow field design is a complex balance between many interdependent constraints, most of which will have an opposing role in the performance of the fuel cell, making the evaluation of these variables important.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a proton exchange membrane fuel cell with the stair arrangement of obstacles in the cathode channel

Baharlou-Houreh,

Masaeli,

Afshari

et al. 2023

HFF

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Purpose This paper aims to investigate the effect of partially blocking the cathode channel with the stair arrangement of obstacles on the performance of a proton exchange membrane fuel cell. Design/methodology/approach A numerical study is conducted by developing a three-dimensional computational fluid dynamics model. Findings As the angle of the stair arrangement increases, the performance of the fuel cell is reduced and the pressure drop is decreased. The use of four stair obstacles with an angle of 0.17° leads to higher power density and a lower pressure drop compared to the case with three rectangular obstacles of the same size and maximum height. The use of four stair obstacles with an angle of 0.34° results in higher power density and lower pressure drop compared to the case with two rectangular obstacles of the same size and maximum height. Originality/value Using the stair arrangement of obstacles as an innovation of the present work, in addition to improving the fuel cell’s performance, creates a lower pressure drop than the simple arrangement of obstacles.

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Performance studies of a membrane-based water and heat exchanger using serpentine flow channels for polymer electrolyte membrane fuel cell application

Masaeli

Afshari

Baniasadi

et al. 2023

Applied Thermal Engineering

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Numerical investigation of water droplet behavior in anode channel of a PEM fuel cell with partial blockage

Cited by 7 publications

References 33 publications

Enhancement of heat transfer in heat sink under the effect of a magnetic field and an impingement jet

Enhancement of heat transfer in heat sink under the effect of a magnetic field and an impingement jet

Performance analysis of a proton exchange membrane fuel cell with the stair arrangement of obstacles in the cathode channel

Performance studies of a membrane-based water and heat exchanger using serpentine flow channels for polymer electrolyte membrane fuel cell application

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