scholarly journals Pore-scale simulation of dispersion and reaction along a transverse mixing zone in two-dimensional porous media

2007 ◽  
Vol 43 (10) ◽  
Author(s):  
Ram C. Acharya ◽  
Albert J. Valocchi ◽  
Charles J. Werth ◽  
Thomas W. Willingham
Keyword(s):  
Porous Media ◽  
Two Dimensional ◽  
Mixing Zone ◽  
Pore Scale ◽  
Transverse Mixing

Two-Dimensional Numerical Analysis of Non-Darcy Flow Using the Lattice Boltzmann Method: Pore-Scale Heterogeneous Effects

2021 ◽  
Vol 143 (6) ◽  
Author(s):  
Yuto Takeuchi ◽  
Junichiro Takeuchi ◽  
Tomoki Izumi ◽  
Masayuki Fujihara
Keyword(s):  
Porous Media ◽  
Lattice Boltzmann ◽  
Darcy Flow ◽  
Two Dimensional ◽  
Pore Scale ◽  
Scale Heterogeneity ◽  
Simulation Results ◽  
Channeling Effect ◽  
Boltzmann Method ◽  
Participation Number

Abstract This study simulates pore-scale two-dimensional flows through porous media composed of circular grains with varied pore-scale heterogeneity to analyze non-Darcy flow effects on different types of porous media using the lattice Boltzmann method. The magnitude of non-Darcy coefficients and the critical Reynolds number of non-Darcy flow were computed from the simulation results using the Forchheimer equation. Although the simulated porous materials have similar porosity and representative grain diameters, larger non-Darcy coefficients and an earlier onset of non-Darcy flow were observed for more heterogeneous porous media. The simulation results were compared with existing correlations to predict non-Darcy coefficients, and the large sensitivity of non-Darcy coefficients to pore-scale heterogeneity was identified. The pore-scale heterogeneity and resulting flow fields were evaluated using the participation number. From the computed participation numbers and visualized flow fields, a significant channeling effect for heterogeneous media in the Darcy flow regime was confirmed compared with that for homogeneous media. However, when non-Darcy flow occurs, this channeling effect was alleviated. This study characterizes non-Darcy effect with alleviation of the channeling effect quantified with an increase in participation number. Our findings indicate a strong sensitivity of magnitude and onset of non-Darcy effect to pore-scale heterogeneity and imply the possibility of evaluating non-Darcy effect through numerical analysis of the channeling effect.

Pore-Scale Analysis of Anaerobic Halorespiring Bacterial Growth along the Transverse Mixing Zone of an Etched Silicon Pore Network

2003 ◽  
Vol 37 (24) ◽  
pp. 5617-5624 ◽  
Author(s):  
Indumathi M. Nambi ◽  
Charles J. Werth ◽  
Robert A. Sanford ◽  
Albert J. Valocchi
Keyword(s):  
Bacterial Growth ◽  
Pore Network ◽  
Mixing Zone ◽  
Scale Analysis ◽  
Pore Scale ◽  
Transverse Mixing ◽  
Etched Silicon

scholarly journals Stochastic flux-related analysis of transverse mixing in two-dimensional heterogeneous porous media

2011 ◽  
Vol 47 (6) ◽  
Author(s):  
Olaf A. Cirpka ◽  
Felipe P. J. de Barros ◽  
Gabriele Chiogna ◽  
Massimo Rolle ◽  
Wolfgang Nowak
Keyword(s):  
Porous Media ◽  
Heterogeneous Porous Media ◽  
Two Dimensional ◽  
Transverse Mixing

Effects of Pore-Scale Heterogeneity and Transverse Mixing on Bacterial Growth in Porous Media

2010 ◽  
Vol 44 (8) ◽  
pp. 3085-3092 ◽  
Author(s):  
Changyong Zhang ◽  
Qinjun Kang ◽  
Xing Wang ◽  
Julie L. Zilles ◽  
Roland H. Müller ◽  
...  
Keyword(s):  
Porous Media ◽  
Bacterial Growth ◽  
Pore Scale ◽  
Transverse Mixing ◽  
Scale Heterogeneity

Using dispersivity values to quantify the effects of pore-scale flow focusing on enhanced reaction along a transverse mixing zone

2010 ◽  
Vol 33 (4) ◽  
pp. 525-535 ◽  
Author(s):  
Thomas Willingham ◽  
Changyong Zhang ◽  
Charles J. Werth ◽  
Albert J. Valocchi ◽  
Mart Oostrom ◽  
...  
Keyword(s):  
Mixing Zone ◽  
Pore Scale ◽  
Flow Focusing ◽  
Transverse Mixing

Pore-Scale Experimental Study of Boiling in Porous Media

2014 ◽  
Author(s):  
Paul SAPIN ◽  
Paul Duru ◽  
Florian Fichot ◽  
Marc Prat ◽  
Michel Quintard
Keyword(s):  
Experimental Study ◽  
Porous Media ◽  
Pore Scale

Two-Dimensional Flow of Polymer Solutions Through Porous Media

1999 ◽  
Vol 2 (3) ◽  
pp. 251-262
Author(s):  
P. Gestoso ◽  
A. J. Muller ◽  
A. E. Saez
Keyword(s):  
Porous Media ◽  
Polymer Solutions ◽  
Two Dimensional ◽  
Dimensional Flow ◽  
Two Dimensional Flow

PORE-SCALE SIMULATION OF ICE MELTING PROCESS IN POROUS MEDIA

2017 ◽  
Author(s):  
Pu He ◽  
Li Chen ◽  
Yu-Tong Mu ◽  
Wen-Quan Tao
Keyword(s):  
Porous Media ◽  
Melting Process ◽  
Pore Scale ◽  
Ice Melting
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