Numerical simulation of dissolution of solid particles in fluid flow using the SPH method

Rahmat, Amin; Barigou, Mostafa; Alexiadis, Alessio

doi:10.1108/hff-05-2019-0437

Cited by 24 publications

(16 citation statements)

References 47 publications

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“…SPH is a mesh-free Lagrangian particle-based method, which was initially developed by Gingold and Monaghan 31 for astrophysical problems. However, it had been used for simulating a broad range of physical problems including free surface, [32][33][34] turbulent, 35,36 multi-phase, 15,37,38 heat transfer, 39,40 and biological problems. 41,42 In this section, the SPH method is described in more detail, which is used in our simulation.…”

Section: Methodsmentioning

confidence: 99%

Electrohydrodynamics of a droplet in a highly confined domain: A numerical study

2020

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In this paper, electrohydrodynamics (EHD) deformation of a droplet in a highly confined domain is studied by using the incompressible smoothed particle hydrodynamics method. Simulations are performed for six different systems of a droplet and ambient fluid corresponding to different electrical properties. The effects of confinement ratios, from 0 to 0.95, on the droplet deformation are discussed thoroughly. It is shown that the deformation is highly dependent on the ratios of electrical permittivity, electrical conductivity, and confinement ratio. To demonstrate the droplet behavior, electric force components on the droplet interface are calculated and discussed in detail. It is shown that the interaction of these forces plays a major role in the droplet deformation. Furthermore, it is illustrated that the pressure force becomes significant at high confinement ratios and affects the droplet behavior in addition to the electric forces. Different values of unbounded deformation are selected for the EHD simulation. The effect of unbounded deformation on the droplet behavior is also discussed, and it is found that the unbounded deformation influence is important in some of the systems and confinement ratios.

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Section: Methodsmentioning

confidence: 99%

Electrohydrodynamics of a droplet in a highly confined domain: A numerical study

2020

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“…Thanks to its particle nature SPH is part of the Discrete Multi-Physics framework where, coupled with other particle methods [38][39][40], is used to address multi-complex physics phenomena [41][42][43][44][45] to overcome the single weakness of each method.…”

Section: Model 21 Smoothed Particle Hydrodynamicsmentioning

confidence: 99%

Non-Symmetrical Collapse of an Empty Cylindrical Cavity Studied with Smoothed Particle Hydrodynamics

Albano

Alexiadis

2021

Applied Sciences

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The non-symmetrical collapse of an empty cylindrical cavity is modeled using Smoothed Particle Hydrodynamics. The presence of a nearby surface produces an anisotropic pressure field generating a high-velocity jet that hits the surface. The collapse follows a different dynamic based on the initial distance between the center of the cavity and the surface. When the distance is greater than the cavity radius (detached cavity) the surface is hit by traveling shock waves. When the distance is less than the cavity radius (attached cavity) the surface is directly hit by the jet and later by other shock waves generated in the last stages of the of the collapse. The results show that the surface is hit by a stronger shock when distance between the center of the cavity and the surface is zero while showing more complex double peaks behavior for other distances.

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“…In this way, it is possible to extend the range of application of a single method by introducing potentials typical of other particle methods. This technique has been successfully used in several fields including fluid–structure interactions [ 33 , 34 , 35 ], solidification/dissolution [ 36 , 37 ], biological flows [ 38 , 39 , 40 ] and even machine learning [ 41 , 42 ]. In the case under investigation, we do not model water as a fluid.…”

Section: Theorymentioning

confidence: 99%

Combined Peridynamics and Discrete Multiphysics to Study the Effects of Air Voids and Freeze-Thaw on the Mechanical Properties of Asphalt

et al. 2021

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This paper demonstrates the use of peridynamics and discrete multiphysics to assess micro crack formation and propagation in asphalt at low temperatures and under freezing conditions. Three scenarios are investigated: (a) asphalt without air voids under compressive load, (b) asphalt with air voids and (c) voids filled with freezing water. The first two are computed with Peridynamics, the third with peridynamics combined with discrete multiphysics. The results show that the presence of voids changes the way cracks propagate in the material. In asphalt without voids, cracks tend to propagate at the interface between the mastic and the aggregate. In the presence of voids, they ‘jump’ from one void to the closest void. Water expansion is modelled by coupling Peridynamics with repulsive forces in the context of Discrete Multiphysics. Freezing water expands against the voids’ internal surface, building tension in the material. A network of cracks forms in the asphalt, weakening its mechanical properties. The proposed methodology provides a computational tool for generating samples of ‘digital asphalt’ that can be tested to assess the asphalt properties under different operating conditions.

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Numerical simulation of dissolution of solid particles in fluid flow using the SPH method

Cited by 24 publications

References 47 publications

Electrohydrodynamics of a droplet in a highly confined domain: A numerical study

Electrohydrodynamics of a droplet in a highly confined domain: A numerical study

Non-Symmetrical Collapse of an Empty Cylindrical Cavity Studied with Smoothed Particle Hydrodynamics

Combined Peridynamics and Discrete Multiphysics to Study the Effects of Air Voids and Freeze-Thaw on the Mechanical Properties of Asphalt

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