Experimental investigation of water droplet–air flow interaction in a non-reacting PEM fuel cell channel

Esposito, Angelo; Montello, Aaron; Guezennec, Yann; Pianese, Cesare

doi:10.1016/j.jpowsour.2009.11.078

Cited by 31 publications

(16 citation statements)

References 22 publications

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“…Besides growing, coalescing and evaporating/condensing, the droplets can also detached when critical size is reached, which is related to the air velocity with the following law [25,26]: h c = 6.948u −0.927 air + 0.338 (20) where h c is the droplet critical size for detachment in millimeters. Detached droplets are swept by the air velocity according to another empirical relationship derived from the experimental data presented in [25,26]:…”

Section: Q C→intmentioning

confidence: 99%

“…Detached droplets are swept by the air velocity according to another empirical relationship derived from the experimental data presented in [25,26]:…”

Section: Q C→intmentioning

confidence: 99%

“…(20) and (21) could be replaced by a more detailed model describing the droplet detachment process. This has to account for droplet oscillation before detachment [26] and air drag versus adhesion force for running droplets. These processes are the topics of an ongoing study of the authors.…”

Section: Q C→intmentioning

confidence: 99%

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Coupled modeling of water transport and air–droplet interaction in the electrode of a proton exchange membrane fuel cell

Esposito¹,

Pianese²,

Guezennec³

2010

Journal of Power Sources

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Section: Q C→intmentioning

confidence: 99%

“…Detached droplets are swept by the air velocity according to another empirical relationship derived from the experimental data presented in [25,26]:…”

Section: Q C→intmentioning

confidence: 99%

See 1 more Smart Citation

Coupled modeling of water transport and air–droplet interaction in the electrode of a proton exchange membrane fuel cell

Esposito¹,

Pianese²,

Guezennec³

2010

Journal of Power Sources

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“…Kumbur et al (2006) experimentally studied the effect of surface polytetrafluoroethene (PTFE) coverage, channel geometry, air flow rate and other parameters on the liquid droplet deformation on the GDL surface. Esposito et al (2010) examined the droplet-induced oscillation in a non-reacting flow channel of a PEMFC with a high speed fluorescence photometry system. Similarly, numerical simulation has been widely used to study the complex water transport characteristics in PEMFC.…”

Section: Introductionmentioning

confidence: 99%

Effect of Gas Diffusion Layer Deformation on Liquid Water Transport in Proton Exchange Membrane Fuel Cell

Bao

Zhou

Jiao

et al. 2014

Engineering Applications of Computational Fluid Mechanics

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In this study, a three-dimensional numerical model, based on the volume-of-fluid (VOF) method, was developed to investigate the water transport characteristics in the cathode of a proton exchange membrane fuel cell (PEMFC) taking into account the deformation of the gas diffusion layer (GDL). Simulations are carried out with different inlet flow rates, amount of liquid water in the GDL, positions of water droplet in the flow channel, and contact angles of the GDL and flow channel surfaces. Two mechanisms of liquid water droplet leaving the GDL are observed. One is driven by the surface tension when the gas flow rate is low, whereas the other is driven by the gas flow at high gas flow rates. Meanwhile, the deformation of the GDL and other factors highly influence the water droplet dynamics.

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“…Ferrand et al [3] used a phase Doppler and laser induced fluorescence technique to study the gas-droplet turbulent velocity and two-phase interaction through a jet with partly responsive droplets. Esposito et al [4] used a monochrome charge-coupled device CCD camera to study the growth of the droplets. The experimental methods can provide very useful information about the liquid droplets at certain measurement points, but it is difficult for them to show the details of the flow fields and parameters inside the spray.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Water Jet Flow Using Diffusion Flux Mixture Model

Shang

Lou

2014

Journal of Fluids

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A multidimensional diffusion flux mixture model was developed to simulate water jet two-phase flows. Through the modification of the gravity using the gradients of the mixture velocity, the centrifugal force on the water droplets was able to be considered. The slip velocities between the continuous phase (gas) and the dispersed phase (water droplets) were able to be calculated through multidimensional diffusion flux velocities based on the modified multidimensional drift flux model. Through the numerical simulations, comparing with the experiments and the simulations of traditional algebraic slip mixture model on the water mist spray, the model was validated.

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Experimental investigation of water droplet–air flow interaction in a non-reacting PEM fuel cell channel

Cited by 31 publications

References 22 publications

Coupled modeling of water transport and air–droplet interaction in the electrode of a proton exchange membrane fuel cell

Coupled modeling of water transport and air–droplet interaction in the electrode of a proton exchange membrane fuel cell

Effect of Gas Diffusion Layer Deformation on Liquid Water Transport in Proton Exchange Membrane Fuel Cell

Numerical Simulation of Water Jet Flow Using Diffusion Flux Mixture Model

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