scholarly journals Two-fluid dust and gas mixtures in smoothed particle hydrodynamics: a semi-implicit approach

2014 ◽  
Vol 443 (1) ◽  
pp. 927-945 ◽  
Author(s):  
Pablo Lorén-Aguilar ◽  
Matthew R. Bate
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Gas Mixtures ◽  
Particle Hydrodynamics ◽  
Implicit Approach ◽  
Smoothed Particle ◽  
Two Fluid

scholarly journals A solution to the overdamping problem when simulating dust–gas mixtures with smoothed particle hydrodynamics

2020 ◽  
Vol 495 (4) ◽  
pp. 3929-3934 ◽  
Author(s):  
Daniel J Price ◽  
Guillaume Laibe
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Computational Cost ◽  
Gas Mixtures ◽  
Strongly Coupled ◽  
Particle Pairs ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Spurious Oscillations ◽  
Slope Limiters ◽  
Additional Memory

ABSTRACT We present a fix to the overdamping problem found by Laibe & Price when simulating strongly coupled dust–gas mixtures using two different sets of particles using smoothed particle hydrodynamics. Our solution is to compute the drag at the barycentre between gas and dust particle pairs when computing the drag force by reconstructing the velocity field, similar to the procedure in Godunov-type solvers. This fixes the overdamping problem at negligible computational cost, but with additional memory required to store velocity derivatives. We employ slope limiters to avoid spurious oscillations at shocks, finding the van Leer Monotonized Central limiter most effective.

A two-fluid smoothed particle hydrodynamics (TF-SPH) method for gas–solid fluidization

2013 ◽  
Vol 99 ◽  
pp. 89-101 ◽  
Author(s):  
Lijuan Deng ◽  
Yaning Liu ◽  
Wei Wang ◽  
Wei Ge ◽  
Jinghai Li
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Sph Method ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Two Fluid
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