A numerical multiphase CFD simulation for PEMFC with parallel sinusoidal flow fields

Atyabi, Seyed Ali; Afshari, Ebrahim

doi:10.1007/s10973-018-7270-3

Cited by 74 publications

(29 citation statements)

References 27 publications

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“…The pressure drop and the fluid velocity magnitude are therefore smaller in the straight channel case compared to the wavy cases. Thus, this explains the reason for the inherent poor reactant mixing [35] and low cell performance compared to the sinusoidal-shaped channel design [8].…”

Section: Single-phase Flow Characteristics Of the Channels Under Invementioning

confidence: 99%

“…However, while this may pose as a disadvantage as a result of the inherent pumping loss, this penalty is negligible compared to the many benefits. The slight high-pressure gradient is useful in ensuring efficient water removal, especially at the cathode side of the PEMFC [8]. As such, the possibility of flooding in hybrid sinusoidal channels is nearly impossible with improved gas flow speed and heat management.…”

Section: Single-phase Flow Characteristics Of the Channels Under Invementioning

confidence: 99%

“…This positive behaviour would significantly enhance PEMFC performance via efficient water management and improved mass transport. So far, the improvement in PEMFC performance has been reported both experimentally and numerically in cases where the wavy flow channels were employed [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of Liquid Water Transport Dynamics in Novel Hybrid Sinusoidal Flow Channel Designs for PEMFC

et al. 2019

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This study numerically investigates liquid water dynamics in a novel hybrid sinusoidal flow channel of a proton exchange membrane fuel cell (PEMFC). The two-phase flow is examined using a three-dimensional, transient computational fluid dynamics (CFD) simulation employing the coupled level set and volume of fluid (VOF) method. Simulations for hybrid and non-hybrid sinusoidal flow channels, including a straight flow channel, are compared based on their water exhaust capacities and pressure drops. Additionally, the effects of inlet gas velocity, wall wettability, and droplet interaction in the flow channel on the dynamic behaviour of liquid water are investigated. Results reveal that the novel hybrid sinusoidal channel designs are consistent in terms of quicker water removal under varying hydrophilic wall conditions. Also, it is found that the liquid surface coverage, detachment, and removal rate depends on droplet proximity to the walls, inlet gas velocity, and wall contact angle. Also, the time a droplet makes contact with the side walls affect the discharge time. Additionally, there is an improvement in the gas velocity magnitude and vertical component velocity across the hybrid sinusoidal channel designs. Therefore, the unique geometric configuration of the proposed hybrid Design makes it a viable substitute for water management in PEMFC applications.

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Section: Single-phase Flow Characteristics Of the Channels Under Invementioning

confidence: 99%

Section: Single-phase Flow Characteristics Of the Channels Under Invementioning

confidence: 99%

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Numerical Investigation of Liquid Water Transport Dynamics in Novel Hybrid Sinusoidal Flow Channel Designs for PEMFC

et al. 2019

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“…The PFF and sinusoidal flow field (channels are same as zigzag flow channels) were compared [53] . Even though the pressure drop of sinusoidal flow field was 6 times more than PFF with more power consumption, this was helpful in the removal of water at higher current densities.…”

Section: Effects Of Different Flow Field Designsmentioning

confidence: 99%

Performance Studies of Proton Exchange Membrane Fuel Cells with Different Flow Field Designs – Review

Marappan¹,

Palaniswamy

Velumani

et al. 2021

The Chemical Record

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Proton Exchange Membrane Fuel Cell (PEMFC) is majorly used for power generation without producing any emission. In PEMFC, the water generated in the cathode heavily affects the performance of fuel cell which needs better water management. The flow channel designs, dimensions, shape and size of the rib/channel, effective area of the flow channel and material properties are considered for better water management and performance enhancement of the PEMFC in addition to the inlet reactant's mass flow rate, flow directions, relative humidity, pressure and temperature. With the purpose of increasing the output energy of the fuel cell, many flow field designs are being developed continuously. In this paper, the performance of various conventional, modified, hybrid and new flow field designs of the PEMFC is studied in detail. Further the effects of channel tapering, channel bending, landing to channels width ratios, channel cross‐sections and insertion of baffles/blockages/pin‐fins/inserts are reviewed. The power density of the flow field designs, the physical parameters like active area, dimensions of channel/rib, number of channels; and the operating parameters like temperature and pressure are also tabulated.

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“…Yin et al 19 used FLUENT to study the influence of the installation of baffles in the flow channel on the performance of PEMFC. Atyabi and Afshari 20 used a finite volume method based on nonisothermal, steady‐state and multiphase models to study the sinusoidal flow field. The results showed that under the operating voltage, the maximum velocity and voltage drop of the sinusoidal flow field are 1.18 and 6 times that of the parallel flow field at the GDL/CL interface, respectively.…”

Section: Introductionmentioning

confidence: 99%

Simulation study of proton exchange membrane fuel cell cross‐convection self‐humidifying flow channel

Tong

Yuan

et al. 2020

Int J Energy Res

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Summary The proton conducting membrane is the core component of the fuel cell. It needs water to maintain conductivity. Excessive water content inside the fuel cell will block the membrane surface and reduce the output power of the fuel cell. On the other hand, if the water content is too low, the internal resistance of the fuel cell will increase, which will reduce the performance and service life of the fuel cell. Considering the above problems, it is necessary to humidify the air and hydrogen gas before entering the fuel cell, but humidification is to prevent the membrane at the gas inlet from becoming dry. Although proton exchange membrane fuel cell (PEMFC) generates enough water, most of the gas is not completely saturated. This paper designs a self‐humidifying channel to redistribute the distribution of humid gas between different channels, and used FLUENT to simulate the heat and mass transfer, electrical conduction in the fuel cell. The effect of the self‐humidifying flow channel location on the PEMFC water and heat distribution is analyzed and evaluated.

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A numerical multiphase CFD simulation for PEMFC with parallel sinusoidal flow fields

Cited by 74 publications

References 27 publications

Numerical Investigation of Liquid Water Transport Dynamics in Novel Hybrid Sinusoidal Flow Channel Designs for PEMFC

Numerical Investigation of Liquid Water Transport Dynamics in Novel Hybrid Sinusoidal Flow Channel Designs for PEMFC

Performance Studies of Proton Exchange Membrane Fuel Cells with Different Flow Field Designs – Review

Simulation study of proton exchange membrane fuel cell cross‐convection self‐humidifying flow channel

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