scholarly journals Direct Numerical Simulation of Hydrate Dissociation in Homogeneous Porous Media by Applying CFD Method: One Example of CO2 Hydrate

2018 ◽  
Author(s):  
Wu-Yang Sean
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Direct Numerical Simulation ◽  
Hydrate Dissociation ◽  
Homogeneous Porous Media ◽  
Cfd Method

Direct numerical simulation of methane hydrate dissociation in pore-scale flow by using CFD method

2017 ◽  
Vol 113 ◽  
pp. 176-183 ◽  
Author(s):  
Pei-Yi Yu ◽  
Wu-Yang Sean ◽  
Ren-Yu Yeh ◽  
Lin-Han Chiang Hsieh ◽  
Ray-Quan Hsu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Methane Hydrate ◽  
Pore Scale ◽  
Hydrate Dissociation ◽  
Cfd Method

scholarly journals Direct Numerical Simulation of Pore-Scale Trapping Events During Capillary-Dominated Two-Phase Flow in Porous Media

2021 ◽  
Author(s):  
Mosayeb Shams ◽  
Kamaljit Singh ◽  
Branko Bijeljic ◽  
Martin J. Blunt
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Direct Numerical Simulation ◽  
Complex Geometry ◽  
Flow In Porous Media ◽  
Pore Scale ◽  
Contact Lines ◽  
Two Phase ◽  
X Ray ◽  
Aspect Ratios

AbstractThis study focuses on direct numerical simulation of imbibition, displacement of the non-wetting phase by the wetting phase, through water-wet carbonate rocks. We simulate multiphase flow in a limestone and compare our results with high-resolution synchrotron X-ray images of displacement previously published in the literature by Singh et al. (Sci Rep 7:5192, 2017). We use the results to interpret the observed displacement events that cannot be described using conventional metrics such as pore-to-throat aspect ratio. We show that the complex geometry of porous media can dictate a curvature balance that prevents snap-off from happening in spite of favourable large aspect ratios. We also show that pinned fluid-fluid-solid contact lines can lead to snap-off of small ganglia on pore walls; we propose that this pinning is caused by sub-resolution roughness on scales of less than a micron. Our numerical results show that even in water-wet porous media, we need to allow pinned contacts in place to reproduce experimental results.

Direct numerical simulation of pore scale particle-water-oil transport in porous media

2019 ◽  
Vol 180 ◽  
pp. 159-175 ◽  
Author(s):  
Junwei Su ◽  
Guoliang Chai ◽  
Le Wang ◽  
Weidong Cao ◽  
Jinbiao Yu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Direct Numerical Simulation ◽  
Pore Scale ◽  
Oil Transport ◽  
Transport In Porous Media ◽  
Scale Particle

Direct Numerical Simulation of an Open-Cell Metallic Foam through Lattice Boltzmann Method

2015 ◽  
Vol 18 (3) ◽  
pp. 707-722 ◽  
Author(s):  
Daniele Chiappini ◽  
Gino Bella ◽  
Alessio Festuccia ◽  
Alessandro Simoncini
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Direct Numerical Simulation ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Media Analysis ◽  
Metallic Foam ◽  
Computational Domain ◽  
Open Cell ◽  
Boltzmann Method

AbstractIn this paper Lattice Boltzmann Method (LBM) has been used in order to perform Direct Numerical Simulation (DNS) for porous media analysis. Among the different configurations of porous media, open cell metallic foams are gaining a key role for a large number of applications, like heat exchangers for high performance cars or aeronautic components as well. Their structure allows improving heat transfer process with fruitful advantages for packaging issues and size reduction. In order to better understand metallic foam capabilities, a random sphere generation code has been implemented and fluid-dynamic simulations have been carried out by means of a kinetic approach. After having defined a computational domain the Reynolds number influence has been studied with the aim of characterizing both pressure drop and friction factor throughout a finite foam volume. In order to validate the proposed model, a comparison analysis with experimental data has been carried out too.

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