Numerical simulation of droplet formation in a microfluidic T-junction using a dynamic contact angle model

Yin, Jun; Kuhn, Simon

doi:10.1016/j.ces.2022.117874

Cited by 17 publications

(3 citation statements)

References 40 publications

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“…Two-dimensional volume of fluid (VOF) simulations were performed to aid the atomization prediction. For this, the standard OpenFOAM solver interFoam was modified to include a smoothing method to suppress spurious currents (see [45] for solver details). The geometry consisted of a rectangular 2D tank with a driven vibrating bottom (oscillating at 500 kHz for different oscillation amplitudes, which were: 0.4 μm, 0.5 μm, 1.0 μm, 1.5 μm, 2.0 μm, and 2.5 μm) and periodic boundary conditions at the sides.…”

Section: Methodology For Atomization Predictionmentioning

confidence: 99%

Analysis of dynamic acoustic resonance effects in a sonicated gas–liquid flow microreactor

Cailly

Carogher

Bolze

et al. 2023

Ultrasonics Sonochemistry

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Section: Methodology For Atomization Predictionmentioning

confidence: 99%

Analysis of dynamic acoustic resonance effects in a sonicated gas–liquid flow microreactor

Cailly

Carogher

Bolze

et al. 2023

Ultrasonics Sonochemistry

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“…In our previous study on atomising liquid slugs in segmented flow, we showed that this threshold can be predicted by VOF simulations (Cailly et al 2023). A standard two-dimensional OpenFOAM solver interFoam modified according to Yin & Kuhn (2022) was used, and the detailed methodology is provided in Cailly et al (2023). The method is consistent with the Kumar & Tuckerman (1994) theory for predicting the Faraday instability threshold at the selected frequency.…”

Section: Dynamic Acoustic Resonance With Deformed Liquid Surfacesmentioning

confidence: 96%

“…2023). A standard two-dimensional OpenFOAM solver interFoam modified according to Yin & Kuhn (2022) was used, and the detailed methodology is provided in Cailly et al. (2023).…”

Section: Figure 12mentioning

confidence: 99%

Numerical analysis of dynamic acoustic resonance with deformed liquid surfaces: the acoustic fountain

Cailly,

Yin,

Kuhn

2023

J. Fluid Mech.

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Applying a focused ultrasonic field on a free liquid surface results in its growth eventually leading to the so-called acoustic fountain. In this work, a numerical approach is presented to further increase the understanding of the acoustic fountain phenomenon. The developed simulation method enables the prediction of the free surface motion and the dynamic acoustic field in the moving liquid. The dynamic system is a balance between inertia, surface tension and the acoustic radiation force, and its nonlinearity is demonstrated by studying the relation between the ultrasonic excitation amplitude and corresponding liquid deformation. We show that dynamic resonance is the main mechanism causing the specific acoustic fountain shapes, and the analysis of the dynamic acoustic pressure allows us to predict Faraday-instability atomisation. We show that strong resonance peaks cause atomisation bursts and strong transient deformations corresponding to previously reported experimental observations. The quantitative prediction of the dynamic acoustic pressure enables us to assess the potential of cavitation generation in acoustic fountains. The observed local high acoustic pressures above both the cavitation and the atomisation threshold hint at the coexistence of these two phenomena in acoustic fountains.

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Mathematical Model of Two-Phase Spontaneous Imbibition with Dynamic Contact Angle

et al. 2023

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Numerical simulation of droplet formation in a microfluidic T-junction using a dynamic contact angle model

Cited by 17 publications

References 40 publications

Analysis of dynamic acoustic resonance effects in a sonicated gas–liquid flow microreactor

Analysis of dynamic acoustic resonance effects in a sonicated gas–liquid flow microreactor

Numerical analysis of dynamic acoustic resonance with deformed liquid surfaces: the acoustic fountain

Mathematical Model of Two-Phase Spontaneous Imbibition with Dynamic Contact Angle

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