A comprehensive SPH model for three-dimensional multiphase interface simulation

•A comprehensive multiphase SPH model is proposed.•A modified viscous term is incorporated into an improved boundary model.•Multiphase cases are tested to demonstrate the correctness of the model. Smoothed particle hydrodynamics is a typical Lagrangian meshless method, which has unique advantages in...

Full description

Saved in:
Bibliographic Details
Published in:Computers & fluids 2019-06, Vol.187, p.98-106
Main Authors: Yang, Qianhong, Yao, Jun, Huang, Zhaoqin, Asif, Mehmood
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Computer simulation
Continuous surface force model
Damping
Deformation
Density
Droplets
Exact solutions
Finite element method
Fluid flow
High density ratio
Mathematical models
Meshless methods
Multiphase
Multiphase flow
Shear flow
Smooth particle hydrodynamics
Smoothed particle hydrodynamics
Three dimensional models
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•A comprehensive multiphase SPH model is proposed.•A modified viscous term is incorporated into an improved boundary model.•Multiphase cases are tested to demonstrate the correctness of the model. Smoothed particle hydrodynamics is a typical Lagrangian meshless method, which has unique advantages in modelling multiphase phenomena with interface deformation and fragmentation. Current study proposes a comprehensive multiphase SPH model, which takes the advantages of some numerical techniques such as numerical interfacial force and damping technique. An improved boundary model is also introduced to deal with the solid walls. Additionally, the multiphase phenomena are investigated by solving an enhanced continuous surface force (CSF) model. In order to verify the proposed model, the droplet in shear flow is firstly considered and the results are consistent with the analytical solutions. Furthermore, the oscillations of square droplets are simulated under different particle resolutions, density and viscosity ratios. Finally, two and three dimensional bubble rising at high density ratios (up to 1000) are tested.
ISSN:0045-7930
1879-0747
DOI:10.1016/j.compfluid.2019.04.001