A novel ghost cell boundary model for the explicit moving particle simulation method in two dimensions

Zheng, Zumei; Duan, Guangtao; Mitsume, Naoto; Chen, Shunhua; Yoshimura, Shinobu

doi:10.1007/s00466-020-01842-0

Cited by 17 publications

(12 citation statements)

References 55 publications

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“…Recently, along with new improvements in MPS method, it has also been extended to many new applications including the two-phase flow simulation. [36][37][38][39] In terms of fluid flow description, the flow interface can be obtained more clearly and smoother by the SPH method than those obtained by original MPS method. 40,41 Therefore, many scholars have proposed high-precision methods such as the multiphase MPS method, the IMPS method, and the least squares MPS method for shortcoming of the MPS method, and have made advanced progress in the stability of the two-phase flow simulation.…”

Section: Introductionmentioning

confidence: 99%

“…The MPS method was first proposed by Koshizuka et al 35 and was initially developed for the simulation of incompressible fluid flow. Recently, along with new improvements in MPS method, it has also been extended to many new applications including the two‐phase flow simulation 36–39 . In terms of fluid flow description, the flow interface can be obtained more clearly and smoother by the SPH method than those obtained by original MPS method 40,41 .…”

Section: Introductionmentioning

confidence: 99%

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An incompressible smoothed particle hydrodynamics‐finite volume method coupling algorithm for interface tracking of two‐phase fluid flows

Yang

2022

Numerical Methods in Fluids

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Two‐phase flow involves complex interface evolution process such as the formation, development, pulsation, and rupture of phase interfaces. Numerical simulation is one of the important means to study two‐phase flow. The tracking and reconstruction of phase interface is the focus of two‐phase flow simulation. A two‐phase flow simulation algorithm based on coupled incompressible smoothed particle hydrodynamics (ISPH) method and finite volume method (FVM) is developed in this article. In present ISPH‐FVM coupling algorithm, one phase which has smaller volume is represented by SPH particles, while the other phase is defined on the FVM grids. The coupling of ISPH and FVM is achieved through the transfer and interaction of physical parameters at the overlapping area of the SPH particles and FVM grids. The continuous medium surface force model is also introduced into the ISPH‐FVM coupling algorithm to study the effect of surface tension on the two‐phase flow. Several numerical examples of two‐phase flow are adopted to verify the effectiveness of the ISPH‐FVM coupling method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An incompressible smoothed particle hydrodynamics‐finite volume method coupling algorithm for interface tracking of two‐phase fluid flows

Yang

2022

Numerical Methods in Fluids

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“…However, problems in the simulation of Lagrange particles remain: the poor particle approximation accuracy near the boundaries is attributed to an inconsistent boundary treatment and incompleteness of particle support domains. [37][38][39] To achieve higher-order mapping accuracy and high-resolution shock capturing, a novel coupled Euler-Lagrange method is proposed to simulate compressible fluids with large deformation. The CELM can not only solve the Lagrange grid distortion problem but can also resolve the accuracy defects of the Euler method.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al 36 introduced a hybrid Lagrange–Euler topology optimization method to transmit the density information from the movable Lagrange particles to the fixed Euler grid; therefore, the method can help realize the multi‐density resolution of the complex structure at a lower computational cost. However, problems in the simulation of Lagrange particles remain: the poor particle approximation accuracy near the boundaries is attributed to an inconsistent boundary treatment and incompleteness of particle support domains 37–39 …”

Section: Introductionmentioning

confidence: 99%

A novel coupled Euler–Lagrange method for high resolution shock and discontinuities capturing

Jin,

Ning,

2023

Numerical Methods in Fluids

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The accurate capturing of shock waves by numerical methods has long been a focus of attention in engineering owing to singularity problems in discontinuities. In this article, a novel coupled Euler–Lagrange method (CELM) is proposed to capture shock waves and discontinuities with high resolution and high order of mapping accuracy. CELM arranges the Lagrange particles on an Euler grid to track the discontinuous points automatically, and the data pertaining to the grids and particles interact via a weighted mutual mapping method that not only achieves fourth‐order accuracy in a smooth area of the solution but also maintains a steep discontinuous transition in the discontinuous area. In the virtual particle method, virtual particles are derived from the existing real particles; thus, the inflow and outflow of the particles and interpolation accuracy of the boundary are more easily realized. An accuracy test and energy convergence test demonstrated the fourth‐order convergence accuracy and low energy dissipation of the CELM; the method exhibited lower error and better conservation ability than high‐precision schemes such as WENO3 and WENO5. The Sod shock tube problem and Woodward–Colella problem showed higher discontinuity resolution of the CELM and ability to accurately track discontinuity points. Examples of Riemann problems were employed to prove that the CELM exhibits lower dissipation and higher shock resolution than WENO3 and WENO5. The CELM also showed an accurate structure based on particle distribution. Shockwave diffraction tests were conducted to prove that the CELM results showed good agreement with the experimental data and exhibited an accurate expansion wave. The CELM can also accurately simulate the collision of an expansion wave and vortex.

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“…Examples for the recent application of Lagrangian particle methods such as smoothed particle hydrodynamics (SPH) and moving particle simulations (MPS) for free-surface-flow simulations are given by Zheng et al (2020) and Ni et al (2020).…”

Section: Introductionmentioning

confidence: 99%

Improved Simulation of Flows with Free-Surface Waves by Optimizing the Angle Factor in the HRIC Interface-Sharpening Scheme

2021

JAFM

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In finite-volume-based simulations with free-surface waves, it is usually desired to obtain a sharp interface between both fluid phases. A widely used approach for interface-capturing and sharpening is the combination of the volume-of-fluid method with the HRIC scheme. The HRIC scheme contains a user-defined parameter, the angle factor, which influences the magnitude of the interface-sharpening. The present work demonstrates that the optimum value for the angle factor is case dependent: too small values can cause substantial flow disturbances, such as vorticity production within the wave and the occurrence of parasitic wave components, whereas too large values can cause excessive dissipation of wave energy. The optimum value for the angle factor was found to depend on the wave steepness, the aspect ratio of the grid cells, on the cell size and to a lesser degree on the time step size. Results from an extensive parameter study are presented, which can provide guidance for optimizing the angle factor for flow simulations of free-surface wave propagation. Further, two methods are presented which can be used to determine the optimum value of the angle factor. The magnitude of errors that can occur due to improper choices of the angle factor are discussed and recommendations are given to increase the accuracy of flow simulations with free-surface waves.

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A novel ghost cell boundary model for the explicit moving particle simulation method in two dimensions

Cited by 17 publications

References 55 publications

An incompressible smoothed particle hydrodynamics‐finite volume method coupling algorithm for interface tracking of two‐phase fluid flows

An incompressible smoothed particle hydrodynamics‐finite volume method coupling algorithm for interface tracking of two‐phase fluid flows

A novel coupled Euler–Lagrange method for high resolution shock and discontinuities capturing

Improved Simulation of Flows with Free-Surface Waves by Optimizing the Angle Factor in the HRIC Interface-Sharpening Scheme

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