On the physically based modeling of surface tension and moving contact lines with dynamic contact angles on the continuum scale

Huber, M.; Keller, F.; Säckel, Winfried; Hirschler, Manuel; Kunz, P.; Hassanizadeh, S. M.; Nieken, Ulrich

doi:10.1016/j.jcp.2016.01.030

Cited by 35 publications

(38 citation statements)

References 60 publications

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“…Our approach bears a similarity to the one of Breinlinger et al [27], however as proved by a later study, that model requires artificial scaling factors [28]. It is worth to mention the relevant work of Huber et al [29] where CSF was supplemented with a contact line force model. The proposed method, although based on a physically sound modelling of the triple point dynamics, does not seem offer much room for improvement concerning superhydrophilic and -hydrophobic cases.…”

Section: Introductionmentioning

confidence: 79%

A Robust Method for Wetting Phenomena Within Smoothed Particle Hydrodynamics

Olejnik

Pozorski

2019

Flow Turbulence Combust

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This work is dedicated to improved modelling of wetting phenomena and contact angles by means of meshless Smoothed Particle Hydrodynamics (SPH) method. For this purpose we modify the surface tension model in the neighbourhood of the triple line. For higher accuracy we also alter the general method of computing the interface normals, by applying a specific smoothing to the field of vectors, and not the phase indicator function. The necessity of proper boundary conditions in SPH is concisely discussed with multiphase systems in mind. The implemented model yields accurate results for a set of static cases, even for very low values of the imposed contact angle, both in the absence and presence of gravity. The results of the calculations of droplets moving along the wall show a great potential of the proposed approach in future applications.

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Section: Introductionmentioning

confidence: 79%

A Robust Method for Wetting Phenomena Within Smoothed Particle Hydrodynamics

Olejnik

Pozorski

2019

Flow Turbulence Combust

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“…Surface force can be introduced by the continuum surface force model 38 as Surface force can be introduced by the continuum surface force model 38 as…”

Section: Governing Equationsmentioning

confidence: 99%

“…The subscripts d and c denote disperse phase and continuity phase. Surface force can be introduced by the continuum surface force model 38 as…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical investigation of bubble breakup in a four‐branched microchannel based on non‐Newtonian pseudoplastic fluid

Fan

et al. 2019

Asia-Pacific J Chem Eng

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Bubble breakup in a four-branched microchannel with carboxymethyl cellulose (CMC) solution was investigated by an improved coupled level set and volume of fluid (CLSVOF) method based on consideration of the rheological characteristic of the fluid. The validity of the numerical approach was satisfactorily verified by comparing with the experimental results. The regime and pattern of bubble breakup were evaluated by analyzing the evolution of bubble morphology. The effects of gas velocity, solution concentration, and subchannel width on daughter bubble length were examined, respectively. The results indicate that three split regimes at the branch comprising expansion, squeezing, and pinch-off stage and three flow patterns including long slug, short slug, and bubble flows can be observed. Daughter

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“…From the momentum balance at the contact line between wetting and non-wetting fluid and the solid phase, the volumetric CLF [6] is expressed as…”

Section: Multiphase Flow Modelmentioning

confidence: 99%

Simulation of Electrolyte Imbibition in Gas Diffusion Electrodes

Kunz

Hopp‐Hirschler

Nieken

2019

Chemie Ingenieur Technik

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The performance of the gas diffusion electrode (GDE) is most crucial for technical processes like chlor-alkali electrolysis. It is responsible to ensure intimate contact between gaseous reactants, catalyst, and electrolyte. The physically based contact line force model is employed to simulate the electrolyte imbibition into solid microstructures using the smoothed particle hydrodynamics method. Simulations are presented to show key aspects like the effect of heterogeneous solid substrates with different wetting behavior. Finally, the imbibition in a real GDE geometry is studied for given flux or pressure inlet conditions.

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On the physically based modeling of surface tension and moving contact lines with dynamic contact angles on the continuum scale

Cited by 35 publications

References 60 publications

A Robust Method for Wetting Phenomena Within Smoothed Particle Hydrodynamics

A Robust Method for Wetting Phenomena Within Smoothed Particle Hydrodynamics

Numerical investigation of bubble breakup in a four‐branched microchannel based on non‐Newtonian pseudoplastic fluid

Simulation of Electrolyte Imbibition in Gas Diffusion Electrodes

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