scholarly journals Numerical model for non-Darcy flow through coarse porous media using the moving particle simulation method

2018 ◽  
Vol 22 (5) ◽  
pp. 1955-1962
Author(s):  
Tomoki Izumi ◽  
Junya Mizuta
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Simulation Method ◽  
Darcy Flow ◽  
Particle Simulation ◽  
Navier Stokes Equation ◽  
Flow Through ◽  
Particle Simulation Method ◽  
Moving Particle ◽  
Coarse Porous Media

A numerical model for non-Darcy flow, which occurs when water moves through coarse porous media under high Reynolds number, is developed. The governing equation for incompressible viscous flow through porous media is composed of a continuity equation and a momentum equation, which is the Navier-Stokes equation with an additional non-linear resistance term based on Forchheimer?s law. For the discretization scheme, moving particle simulation method is employed. In order to assess the model validity, seepage experiments in different kinds of coarse porous media are implemented, and then reproducibility of the numerical results is examined. From the results, it is found that the computational flow velocities at middle part of porous media are in good agreement with experimental ones while velocities at outflow end are overestimated.

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

2020 ◽  
Vol 66 (1) ◽  
pp. 87-102 ◽  
Author(s):  
Zumei Zheng ◽  
Guangtao Duan ◽  
Naoto Mitsume ◽  
Shunhua Chen ◽  
Shinobu Yoshimura
Keyword(s):  
Simulation Method ◽  
Two Dimensions ◽  
Particle Simulation ◽  
Cell Boundary ◽  
Ghost Cell ◽  
Particle Simulation Method ◽  
Boundary Model ◽  
Moving Particle

Simulation of Multi-Liquid-Layer Sloshing With Vessel Motion by Using Moving Particle Simulation

2014 ◽  
Author(s):  
Kyung Sung Kim ◽  
Moo Hyun Kim ◽  
Jong-Chun Park
Keyword(s):  
Simulation Method ◽  
Gas Production ◽  
Particle Simulation ◽  
Linear Potential ◽  
Particle Simulation Method ◽  
Moving Particle ◽  
Vessel Motion ◽  
Linear Potential Theory ◽  
Oil Gas ◽  
Surface Tension Model

For oil/gas production/processing platforms, multiple liquid layers can exist and their respective sloshing motions can also affect platform performance. To numerically simulate those problems, a new multi-liquid MPS (Moving Particle Simulation) method is developed. In particular, to better simulate the relevant physics, robust self-buoyancy model, interface searching model, and surface-tension model are developed. The developed multi-liquid MPS method is validated by comparisons against Molin et al’s (2012) three-liquid-sloshing experiment and the corresponding linear potential theory. The verified multi-liquid MPS program is subsequently coupled with a vessel-motion program in time domain to investigate their dynamic-coupling effects. In case of multiple liquid layers, there exist more than one sloshing natural frequencies, so the relevant physics can be much more complicated compared with the single-liquid-tank case. The numerical simulations also show that liquid cargo can function as a beneficial anti-rolling device.

scholarly journals Numerical Simulation of 2-D Solitary Wave Run-Up over Various Slopes Using a Particle-Based Method

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 462 ◽  
Author(s):  
Se-Min Jeong ◽  
Ji-In Park ◽  
Jong-Chun Park
Keyword(s):  
Solitary Wave ◽  
Nonlinear Behavior ◽  
Simulation Method ◽  
Particle Simulation ◽  
Boundary Treatment ◽  
Particle Simulation Method ◽  
Moving Particle ◽  
Scale Turbulence ◽  
Run Up ◽  
The Waves

The present paper covers the numerical prediction of the propagation and run-up of a solitary wave over non-flat seabed with various slope angles using a refined MPS (moving particle simulation) method. In the refined method, the corrected gradient model, new staggered divergence-free model, moving-particle wall boundary treatment, and the sub-particle scale turbulence model are applied to obtain more stable and precise results. The simulation results by the developed method are compared with experimental results, and both results were in good agreement. Especially, it can be seen that the complicated and fully-nonlinear behavior of the free-surface motion during the turbulent processes of build-up, break-down, and overturning of the waves are well reproduced by the developed method.

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