Study of droplet flow characteristics on a wetting gradient surface in a proton exchange membrane fuel cell channel using lattice Boltzmann method

Liao, Jiadong; Yang, Guogang; Li, Shian; Shen, Qiuwan; Jiang, Ziheng; Wang, Hao; Li, Zheng

doi:10.1016/j.jpowsour.2022.231245

Cited by 27 publications

(5 citation statements)

References 43 publications

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“…where Fσ is the force on the fluid, divided into flow-flow force Fσ,int (x) and flow-solid force Fσ,ads (x) [7]. The non-ideal state equation is added to the interaction potential between particles, as shown below:…”

Section: Methodsmentioning

confidence: 99%

“…where a, b, and R are critical parameters, and different values will lead to different critical temperatures and critical pressure [7]. The smaller value of a can improve the model stability.…”

Section: Methodsmentioning

confidence: 99%

“…To verify whether the model can achieve real fluid properties, the model is tested for high-density viscosity ratio, thermodynamic consistency, independent adjustment of surface tension, gas-liquid phase separation test, and static contact angle test. The accuracy of the model calculation is guaranteed, and the details can be found in our previous work [7].…”

Section: Model Validationmentioning

confidence: 97%

See 2 more Smart Citations

Simulation of droplet removal processes in proton exchange membrane fuel cell flow channel using lattice Boltzmann method

Jiang,

Liao,

Yang

et al. 2024

International Conference on Optoelectronic Materials and Devices (ICOMD 2023)

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Model Validationmentioning

confidence: 97%

See 1 more Smart Citation

Simulation of droplet removal processes in proton exchange membrane fuel cell flow channel using lattice Boltzmann method

Jiang,

Liao,

Yang

et al. 2024

International Conference on Optoelectronic Materials and Devices (ICOMD 2023)

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“…The fluid–fluid interaction force of the component k at position x is defined as [ 49 ]:

where ψ k is the effective density of component k at position x and can be taken as

. x ′ represents the surrounding nodes centered on position x .…”

Section: Numerical Approachmentioning

confidence: 99%

Effects of Compression and Porosity Gradients on Two-Phase Behavior in Gas Diffusion Layer of Proton Exchange Membrane Fuel Cells

et al. 2023

Self Cite

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Water management within the gas diffusion layer (GDL) plays an important role in the performance of the proton exchange membrane fuel cell (PEMFC) and its reliability. The compression of the gas diffusion layer during fabrication and assembly has a significant impact on the mass transport, and the porosity gradient design of the gas diffusion layer is an essential way to improve water management. In this paper, the two-dimensional lattice Boltzmann method (LBM) is applied to investigate the two-phase behavior in gas diffusion layers with different porosity gradients under compression. Compression results in an increase in flow resistance below the ribs, prompting the appearance of the flow path of liquid water below the channel, and liquid water breaks through to the channel more quickly. GDLs with linear, multilayer, and inverted V-shaped porosity distributions with an overall porosity of 0.78 are generated to evaluate the effect of porosity gradients on the liquid water transport. The liquid water saturation values within the linear and multilayer GDLs are significantly reduced compared to that of the GDL with uniform porosity, but the liquid water within the inverted V-shaped GDL accumulates in the middle region and is more likely to cause flooding.

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“…[ 16 , 17 , 18 ] 3‐D flow fields have gained considerable attention because of their excellent mass transfer to electrodes. [ 19 , 20 , 21 ] At the same time, various tools have been applied to the study of two‐phase flow in fuel cells, such as the volume of fluid method, [ 22 ] the lattice Boltzmann method, [ 23 ] and artificial intelligence techniques, [ 24 ] which provide guidance for the design of the flow field. While a few studies have been conducted on the modification of cathode flow fields, most of them were carried out on a small fuel cell whose mass transfer loss was not obvious.…”

Section: Introductionmentioning

confidence: 99%

Alternating Flow Field Design Improves the Performance of Proton Exchange Membrane Fuel Cells

et al. 2022

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The flow field structure of a proton exchange membrane fuel cell (PEMFC) is a determining factor for improving the cell power density. In this study, a universal alternating flow field design for the first time is proposed, which arranges structural units with different flow resistances in an alternating way to significantly improve the gas transfer rate into the electrode, with the advantages of easy machining and low pumping loss. Based on the design, it is proposed and tested large-scale fuel cells with three novel flow fields by combining a parallel channel, baffled channel, serpentine channel, and narrowed channel. The results show that the design can significantly enhance the gas supply efficiency and that the novel baffled flow field improves the PEMFC performance by 23% with low pumping loss. The design employed in the study offers additional options for flow field optimization and contributes to the early achievement of next-generation ultrahigh power density fuel cells.

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Study of droplet flow characteristics on a wetting gradient surface in a proton exchange membrane fuel cell channel using lattice Boltzmann method

Cited by 27 publications

References 43 publications

Simulation of droplet removal processes in proton exchange membrane fuel cell flow channel using lattice Boltzmann method

Simulation of droplet removal processes in proton exchange membrane fuel cell flow channel using lattice Boltzmann method

Effects of Compression and Porosity Gradients on Two-Phase Behavior in Gas Diffusion Layer of Proton Exchange Membrane Fuel Cells

Alternating Flow Field Design Improves the Performance of Proton Exchange Membrane Fuel Cells

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