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A stabilized three-dimensional particle method for multiphase boiling: multiphase boiling least squares moving particle semi-implicit method (MPB-LSMPS)
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DOI：10.1016/j.cma.2026.119266.png)
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Abstract
En 中文
Particle methods face significant challenges in simulating phase-change boiling with large density ratios, including density discontinuities at gas-liquid interfaces, intense volume expansion, and numerical instabilities. To address these issues, this paper develops MultiPhase Boiling models based on a three-dimensional stable Least Squares Moving Particle Semi-implicit method (MPB-LSMPS). By introducing the virtual grid technique and mixing discretization schemes, the accuracy of free-surface identification and the stability of the discretization matrix solution near the wall are significantly enhanced. Combined with a Voronoi-based particle shifting technique, the fluctuations in particle distribution during 3D simulations are effectively suppressed. To accurately capture boiling dynamics, surface tension models incorporating gas-liquid-solid triple line wetting characteristics and large-density-ratio multiphase flow models were established. Combined with a particle-volume-adaptive technique and algorithms for particle thermal expansion and splitting, the physical reproduction of the entire process is achieved, including vaporization, bubble detachment, and coalescence.
Keywords:
LSMPS
MPS
Particle method
Multiphase flow
Boiling
Film boiling
Journal
IF:
7.3
Papers:
1.3W
Citations:
5.6W
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