Equilibrium shape and contact angle of sessile drops of different volumes—Computation by SPH and its further improvement by DI

Das, Arup Kumar; Das, Prasanta Kumar

doi:10.1016/j.ces.2010.03.043

Cited by 31 publications

(16 citation statements)

References 46 publications

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“…Having the proper equations for implementing surface tension, now the resulting value of the contact angle should be investigated. Das et al [31,34] used CSF model for surface tension in their studies. They concluded that the resulting contact angle obtained by only applying the surface tension forces was not accurate enough and therefore suggested correcting the contact angle of the drop by repositioning the particles that form the contact line.…”

Section: Contact Angle In Sphmentioning

confidence: 99%

Applying Contact Angle to a Two-Dimensional Multiphase Smoothed Particle Hydrodynamics Model

Farrokhpanah

Samareh

Mostaghimi

2015

Journal of Fluids Engineering

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Section: Contact Angle In Sphmentioning

confidence: 99%

Applying Contact Angle to a Two-Dimensional Multiphase Smoothed Particle Hydrodynamics Model

Farrokhpanah

Samareh

Mostaghimi

2015

Journal of Fluids Engineering

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“…From the common knowledge it follows that interfacial angle Θ [7][8][9] is one of the main indicators of the coal-surfactant solution-gas or the solid-surfactant solution-air interfacial interactions. The following factors influence the choice of this variable as the main for the studies [4], [5]: 1) the structure of the study solid: porosity, coal heterogeneity; 2) physical and chemical properties of the study liquid; 3) the goals and objectives of the process under consideration.…”

Section: Research Materials and Methodsmentioning

confidence: 99%

“…Using modern technical achievements, this method is also being improved, allowing on the one hand automating the measurement process and simultaneously improving the accuracy of measurements, on the other hand [7], [9],.…”

Section: Research Materials and Methodsmentioning

confidence: 99%

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Study of the Change in the Coal-and-Liquid-and-Gas Interfacial Angle

Elkin

Meshkov²

2018

E3S Web Conf.

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Abstract. The use of surfactants has a significant impact on the safety of mining operations in order to prevent dynamic processes, prevent dust. The interfacial angle is the main indicator characterizing the interfacial interactions for heterogeneous multicomponent solid bodies, coal and solutions. The problem of development of modern methods for determining the interfacial angle at the coal-water-gas boundary is considered. The results of the research study of the change in the coalliquid-gas interfacial angle are presented. The influence of various coal properties and characteristics on the interfacial angle value is shown. The influence of the interfacial angle on wetting and filtration processes, the features of the experimental methods for the interfacial angle determination are shown. A model of the coal surface consisting of four main components is proposed. The main attention is paid to the moisture content of coal and capillaries as the main factors determining the properties of coal. An analytical method for determining the interfacial angle of coalwater-gas is proposed.

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“…Our idea is to improve the existing formulation for the CSF, as a reliable tool for modelling capillary effects. We also intend to do it for a sharp interface formulation, not a diffused one like in the diffused interface approach [34]. The method proposed in the following can be summarised as: (i) simple and robust, (ii) free of scaling parameters, (iii) based purely on CSF modification, (iv) maintaining the natural interface treatment of SPH.…”

Section: Introductionmentioning

confidence: 99%

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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Equilibrium shape and contact angle of sessile drops of different volumes—Computation by SPH and its further improvement by DI

Cited by 31 publications

References 46 publications

Applying Contact Angle to a Two-Dimensional Multiphase Smoothed Particle Hydrodynamics Model

Applying Contact Angle to a Two-Dimensional Multiphase Smoothed Particle Hydrodynamics Model

Study of the Change in the Coal-and-Liquid-and-Gas Interfacial Angle

A Robust Method for Wetting Phenomena Within Smoothed Particle Hydrodynamics

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