A pairwise-relaxing incompressible smoothed particle hydrodynamics scheme

Liu, X.; Morita, Koji; Zhang, Shuai

doi:10.1016/j.cma.2019.01.029

Cited by 4 publications

(1 citation statement)

References 36 publications

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“…The corrective gradient model (CGM) was then widely applied in multiphase flows simulation . To improve the accuracy, moving least‐square SPH (MLSPH), least‐square MPS (LSMPS), and pairwise‐relaxing particle method were also proposed.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of two corrective gradient models in the simulation of multiphase flows using moving particle semi‐implicit method

Liu

Morita

Zhang

2019

Numerical Methods in Fluids

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In this study, two corrective gradient models (CGMs) are compared in the simulation of multiphase flows. Linear consistency of the gradient model of moving particle semi-implicit (MPS) method has been recovered by introducing corrective matrix. However, it is found that particles tend to disperse along the streamline while using the CGM proposed in a previous study. Particle shifting (PS) schemes are necessary to reduce the irregularity of particle distribution to stabilize the calculation. To enhance the accuracy and stability, another CGM with dummy particle (CGMD) was proposed in our previous study. This enhanced CGM is featured by linear consistency and purely repulsive pressure gradient force. In this study, this enhanced CGM is modified and applied to multiphase flow simulation. Comparative study suggests that the modified CGM with PS scheme is capable of calculating various multiphase flows and predicting the interface evolution both clearly and accurately. K E Y W O R D Scorrective matrix, gradient model, MPS, multiphase flow, particle method, particle shifting 1 Int J Numer Meth Fluids. 2020;92:573-586.wileyonlinelibrary.com/journal/fld

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Section: Introductionmentioning

confidence: 99%