Effect of pillared surfaces with different shape parameters on droplet wettability via Lattice Boltzmann method

Yin, Bifeng; Xie, Xu; Xu, Shuping; Jia, Huang; Yang, Shuangyu; Dong, Fei

doi:10.1016/j.colsurfa.2021.126259

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…50,51 While droplet dynamics have been fundamentally understood by studying droplets on model surfaces (i.e. pillared, pored and simulated), 26,52,53 few studies have considered more 'realistic' surfaces where chemical and surface heterogeneity coexist. Furthermore, droplet dewetting is often considered by applying an external force (i.e.…”

Section: Discussionmentioning

confidence: 99%

Discontinuous dewetting dynamics of highly viscous droplets on chemically heterogeneous substrates

Jiang

Jackson

Tangparitkul

et al. 2023

Journal of Colloid and Interface Science

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Section: Discussionmentioning

confidence: 99%

Discontinuous dewetting dynamics of highly viscous droplets on chemically heterogeneous substrates

Jiang

Jackson

Tangparitkul

et al. 2023

Journal of Colloid and Interface Science

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“…It can be seen that the simulation results match the result of Maxwell construction 24 . In our previous work, the Laplace validation and contact angle validation were carried out to validate the model 29 …”

Section: Resultsmentioning

confidence: 54%

“…24 In our previous work, the Laplace validation and contact angle validation were carried out to validate the model. 29 Because the droplet has a vertical downward velocity, the droplet hits the surface first and spreads. When the droplet spreads, since the receding angle is smaller, the droplet can spread more readily.…”

Section: Model Validationmentioning

confidence: 99%

A novel dynamic contact angle model of lattice Boltzmann method for water droplet impact on proton exchange membrane fuel cell channel surface

Yin

Jia

et al. 2022

Intl J of Energy Research

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To predict water behavior accurately and explore water droplet impact on a proton exchange membrane fuel cell channel surface, a novel dynamic contact angle model was introduced. A two-dimensional model of water droplet impact was established via the lattice Boltzmann method, and it was validated.Influences of equilibrium contact angle, sliding angle, lateral velocity, and longitudinal velocity were all explored. The results reveal that when droplet impact the channel surface, it appears in three states: spreading, rebounding, and moving. The model can capture the water-air interface accurately. When the droplet impacts a hydrophobic wall, the droplet jumps up after rebounding, and eventually returns to its original shape. When the equilibrium contact angle increases, the spread factor gradually decreases, and the droplet keeps moving on the wall. With the increase of sliding angle, the spread factor gradually decreases, and the height of the droplet rebound also increases. The lateral velocity can cause the front end of the droplet to be elongated. As longitudinal velocity increases, spread factor increases, and relative distance gradually decreases. Novelty Statement• A novel dynamic contact angle model is introduced.• A two-dimensional model of water droplet impact is established.• Influences of equilibrium contact angle, sliding angle, and velocity are explored.• The model can capture the water-air interface accurately.channel, dynamic contact angle model, lattice Boltzmann method, proton exchange membrane fuel cell, water droplet impact | INTRODUCTIONWater management in proton exchange membrane fuel cell (PEMFC) is crucial to the performance and lifetime of a PEMFC. 1,2 For example, if water is accumulated in PEMFC, leading to flooding, gas cannot enter PEMFC. If there are less water in it, its performance deteriorates. 3,4 It is therefore important to predict water behavior in PEMFC. 5,6 Much research on the simulation of water behavior has already been carried out. Li et al 7 explored droplet behavior

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Lattice Boltzmann study on the effects of surface nanostructure on wettability with application in laser scanning fabrication of superhydrophobic surfaces

Huang,

Guo,

et al. 2023

Sci. China Technol. Sci.

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Effect of pillared surfaces with different shape parameters on droplet wettability via Lattice Boltzmann method

Cited by 7 publications

References 32 publications

Discontinuous dewetting dynamics of highly viscous droplets on chemically heterogeneous substrates

Discontinuous dewetting dynamics of highly viscous droplets on chemically heterogeneous substrates

A novel dynamic contact angle model of lattice Boltzmann method for water droplet impact on proton exchange membrane fuel cell channel surface

Lattice Boltzmann study on the effects of surface nanostructure on wettability with application in laser scanning fabrication of superhydrophobic surfaces

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