scholarly journals Impact of spatially correlated pore-scale heterogeneity on drying porous media

2017 ◽  
Vol 53 (7) ◽  
pp. 5645-5658 ◽  
Author(s):  
Oshri Borgman ◽  
Paolo Fantinel ◽  
Wieland Lühder ◽  
Lucas Goehring ◽  
Ran Holtzman
Keyword(s):  
Porous Media ◽  
Pore Scale ◽  
Spatially Correlated ◽  
Scale Heterogeneity

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.

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

scholarly journals MODELING OF MULTISCALE POROUS MEDIA

2011 ◽  
Vol 27 (1) ◽  
pp. 23 ◽  
Author(s):  
Bibhu Biswal ◽  
Pål-Eric Øren ◽  
Rudolf J Held ◽  
Stig Bakke ◽  
Rudolf Hilfer
Keyword(s):  
Porous Media ◽  
Pore Space ◽  
Three Dimensional ◽  
Flow Simulation ◽  
Pore Scale ◽  
Matrix Space ◽  
Spatially Correlated ◽  
Wide Variability ◽  
Fully Connected ◽  
The Continuum

A stochastic geometrical modeling method for reconstructing three dimensional pore scale microstructures of multiscale porous media is presented. In this method the porous medium is represented by a random but spatially correlated structure of objects placed in the continuum. The model exhibits correlations with the sedimentary textures, scale dependent intergranular porosity over many decades, vuggy or dissolution porosity, a percolating pore space, a fully connected matrix space, strong resolution dependence and wide variability in the permeabilities and other properties. The continuum representation allows discretization at arbitrary resolutions providing synthetic micro-computertomographic images for resolution dependent fluid flow simulation. Model implementations for two different carbonate rocks are presented. The method can be used to generate pore scale models of a wide class of multiscale porous media.

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

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

Dissolution of Microscale Energetic Residues in Saturated Porous Media: Visualization and Quantification at the Pore-Scale by Spectral Confocal Microscopy

2011 ◽  
Vol 45 (19) ◽  
pp. 8352-8358 ◽  
Author(s):  
Chao Wang ◽  
Volha Lazouskaya ◽  
Mark E. Fuller ◽  
Jeffrey L. Caplan ◽  
Charles E. Schaefer ◽  
...  
Keyword(s):  
Porous Media ◽  
Confocal Microscopy ◽  
Saturated Porous Media ◽  
Pore Scale

Thermodynamics of porous media

1993 ◽  
Vol 443 (1917) ◽  
pp. 247-255 ◽  
Keyword(s):  
Porous Media ◽  
Elastic Energy ◽  
Pore Scale ◽  
Equilibrium Thermodynamics ◽  
Energy Potential ◽  
Macroscopic Variable ◽  
Strain Tensors

Equilibrium thermodynamics for porous media is considered with special emphasis on its basis in pore-scale thermodynamics. It is shown that porosity, the new purely macroscopic variable, enters the relations on the same footing as mass densities and the strain tensors. Biot’s use of elastic energy potential, which lies at the foundation of his theory of poroelasticity, is examined in light of the results obtained here.

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