Direct numerical simulation of pore-scale reactive transport: applications to wettability alteration during two-phase flow

2012 ◽  
Vol 5 (2/3) ◽  
pp. 142 ◽  
Author(s):  
Yan Zaretskiy ◽  
Sebastian Geiger ◽  
Ken Sorbie
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Reactive Transport ◽  
Two Phase Flow ◽  
Wettability Alteration ◽  
Phase Flow ◽  
Pore Scale ◽  
Two Phase

1008 Direct Numerical Simulation of a wind-driven air-water two-phase flow(1)

2007 ◽  
Vol 2007 (0) ◽  
pp. _1008-a_
Author(s):  
Takanori IMASHIRO ◽  
Takenori KOBAYASHI ◽  
Ryoichi KUROSE ◽  
Satoru KOMORI
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase

scholarly journals DIRECT NUMERICAL SIMULATION OF PARTICLE SEDIMENTATION IN TWO-PHASE FLOW UNDER THERMAL CONVECTION

2011 ◽  
Vol 08 (04) ◽  
pp. 851-861 ◽  
Author(s):  
J. Z. CHANG ◽  
H. T. LIU ◽  
T. X. SU ◽  
M. B. LIU
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Thermal Convection ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Particle Sedimentation ◽  
Two Phase ◽  
Elliptical Particles ◽  
Particle Shapes ◽  
Sedimentation Processes

This paper presents a direct numerical simulation of particle sedimentation in two-phase flow with thermal convection. The sedimentation processes of elliptical particles are investigated in three different scenarios with isotherm, hot, and cold Newtonian fluids. We demonstrate that different particle shapes and orientations can result in quite different flow behaviors. Some interesting results have been obtained, which are very helpful for better understanding of the particle sedimentation processes.

A phase field method pore-scale model for simulating kinetic interface sensitive tracers reactive transport in porous media two-phase flow systems

2020 ◽  
Author(s):  
Huhao Gao ◽  
Alexandru Tatomir ◽  
Nikolaos Karadimitriou ◽  
Martin Sauter
Keyword(s):  
Diffusion Process ◽  
Phase Field ◽  
Reactive Transport ◽  
Two Phase Flow ◽  
Interfacial Area ◽  
Field Method ◽  
Phase Field Method ◽  
Phase Flow ◽  
Pore Scale ◽  
Two Phase

<p>Over the last few years, our understanding of the processes involved in the application of Kinetic Interfacial Sensitive (KIS) tracers in two-phase flow as a means to quantify the fluid-fluid interfacial area has been enhanced with the use of controlled column experiments (Tatomir et al. 2015,2018). However, there are still some open questions regarding the effect of immobile water, either as capillary and dead-end trapped water or as a film, and the measured by product concentration at the outflow.</p><p>In this study, a new pore-scale reactive transport model is presented, based on the phase-field method, which is able to deal with the KIS tracer interfacial reaction and selective distribution of the by-production into the water phase. The model is validated by comparing the analytical solutions for a diffusion process across the interface and a reaction-diffusion process, and is tested for a drainage process in a capillary tube for different Péclet numbers. The applicability of the model is demonstrated in a realistic 2D porous medium NAPL/water drainage scenario used in the literature. Four case studies are investigated in detail to obtain macroscopic parameters, like saturation, capillary pressure, specific interfacial area, and concentration, for a number of combinations between the inflow rate, the contact angle and diffusivity. We derive a relation between the by-product mass at the outflow and the mobile part of the interfacial area, which is formulated by adding a residual factor. This term relates to the part of the by-product produced by mobile interface that becomes residual in the immobile zones.</p>

1008 Direct Numerical Simulation of a wind-driven air-water two-phase flow(2)

2007 ◽  
Vol 2007 (0) ◽  
pp. _1008-1_-_1008-4_
Author(s):  
Takanori IMASHIRO ◽  
Takenori KOBAYASHI ◽  
Ryoichi KUROSE ◽  
Satoru KOMORI
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase
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