An axisymmetric multiphase SPH model for the simulation of rising bubble

Li, Mingkang; Zhang, A-Man; Ming, Fu-Ren; Sun, Peng-Nan; Peng, Yaoli

doi:10.1016/j.cma.2020.113039

Cited by 20 publications

(3 citation statements)

References 40 publications

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“…Another option is to apply a suitable correction function to 𝜂(𝑟 → 0), as in García-Senz et al (2009). Particle excursions to the negative region, 𝑟 < 0, of the plane can be blocked with the addition of adhoc repulsive damping forces in the axis neighborhood (Li et al 2020).…”

Section: Boundariesmentioning

confidence: 99%

Axisymmetric smoothed particle magnetohydrodynamics

a-Senz

Wissing

Cabezón

et al. 2022

Monthly Notices of the Royal Astronomical Society

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Many astrophysical and terrestrial scenarios involving magnetic fields can be approached in axial geometry. Although the smoothed particle hydrodynamics (SPH) technique has been successfully extended to magneto-hydrodynamics (MHD), a well-verified, axisymmetric MHD scheme based on such technique does not exist yet. In this work we fill that gap in the scientific literature and propose and check a novel axisymmetric MHD hydrodynamic code, that can be applied to physical problems which display the adequate geometry. We show that the hydrodynamic code built following these axisymmetric hypothesis is able to produce similar results than standard 3D-SPMHD codes with equivalent resolution but with much lesser computational load.

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Section: Boundariesmentioning

confidence: 99%

Axisymmetric smoothed particle magnetohydrodynamics

a-Senz

Wissing

Cabezón

et al. 2022

Monthly Notices of the Royal Astronomical Society

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“…For multi-phase flow simulation, many scholars have developed various SPH multiphase models and schemes, mainly solving the problems of interface instability caused by high density ratio [30] and drastic changes [31] , and accuracy decrease caused by irregular particle distribution [32] . The multiphase SPH method has been applied to study the dynamic characteristics of rising bubbles [33,34,35,36] . Joshi et al [37] established a free surface SPH mode to simulate the interaction process between a cavity and elastic-plastic materials.…”

Section: Introductionmentioning

confidence: 99%

Volume-adaptive SPH simulation of structural damage subjected to underwater contact explosion

DONG,

Feng

2024

Preprint

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Underwater explosions can generate substantial dynamic loads, leading to damage or failure of solid structures such as submarine pipelines. This process involves the interaction of high-pressure explosion products, water, and solid structures, characterized by transience, multi-phase interaction, and large deformations. In this study, a Lagrange mesh-free method called Smoothed Particle Hydrodynamics (SPH) is employed to establish a fluid-solid interaction (FSI) model for underwater contact explosions. The SPH discrete equations of governing equations of continuum media including fluid and solid are constructed as anti-symmetric forms based on the particle approximation technique and kernel gradient correction scheme. The equation of state is presented to describe the material response in strong interactions for the explosive, water, and solid, respectively. To simulate solid plasticity, the Johnson-Cook constitutive models are integrated into the SPH procedure to capture the behavior of large deformation and damage of metal structures. To address the issue of drastic changes in particle spacing caused by suddenly expanding gas, a modified particle regeneration technique (M-PRT) is proposed to refresh SPH particles in the gas domain according to the volume change rate. The first-order Moving Least Squares (MLS) approach is used to update the variables of refreshed particles, thus the linear variation of field variables is reproduced. The accuracy of the model is verified through several examples, including free-field underwater explosions, near-wall underwater explosions, and underwater contact explosions.

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“…Numerical simulation methods of bubble motion have been extensively studied by many researchers, such as volume-of-fluid (VOF) method [2][3], level set method [4], lattice Boltzmann method [5], smooth particle hydrodynamics (SPH) method [6], an improved numerical algorithm for front tracking method [7] and moving particle semi-implicit (MPS) method [8], etc. The rising trajectory of a single bubble is related to the fluid properties.…”

Section: Introductionmentioning

confidence: 99%

The movement and shape change characteristics of a bubble passing through a liquid-liquid interface

Zhang

Qing

et al. 2023

Therm sci

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In order to study the movement and shape change characteristic of bubble when passing through the interface of two kinds of liquids with different viscosity, the free rising process of a single bubble in static stratified liquids was numerically simulated with the volume of fluid (VOF) method. The results show that, when the initial height of bubble rising is the same, the rising velocity, deformation increase with the increase of bubble radius. When the maximum intensity of the vortex in the bubble is distributed at the top of the bubble, the top of the left and right sides and the bottom of the left and right sides, the bubble shape is spherical, ellipsoid and spherical cap shape respectively. At different initial heights, the bubble trajectory shows three different shapes -linear, spiral and C-shaped. The relationship between the bubble aspect ratio and rising height is predicted when different radius bubble passing through the interface. The amount of liquid B(lower layer) carried by the bubble increases with the increase of the bubble?s initial radius, and the amount of liquid carried by bubbles in C-shaped trajectory is higher than that in spiral trajectory.

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An axisymmetric multiphase SPH model for the simulation of rising bubble

Cited by 20 publications

References 40 publications

Axisymmetric smoothed particle magnetohydrodynamics

Axisymmetric smoothed particle magnetohydrodynamics

Volume-adaptive SPH simulation of structural damage subjected to underwater contact explosion

The movement and shape change characteristics of a bubble passing through a liquid-liquid interface

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