Effect of deformation on the thermal conductivity of granular porous media with rough grain surface

2017 ◽  
Vol 44 (16) ◽  
pp. 8285-8293 ◽  
Author(s):  
Roohollah Askari ◽  
S. Hossein Hejazi ◽  
Muhammad Sahimi
Keyword(s):  
Thermal Conductivity ◽  
Porous Media ◽  
Granular Porous Media ◽  
Grain Surface

Thermal Conduction in Deforming Isotropic and Anisotropic Granular Porous Media with Rough Grain Surface

2018 ◽  
Vol 124 (1) ◽  
pp. 221-236 ◽  
Author(s):  
Roohollah Askari ◽  
S. Hossein Hejazi ◽  
Muhammad Sahimi
Keyword(s):  
Porous Media ◽  
Thermal Conduction ◽  
Granular Porous Media ◽  
Grain Surface

scholarly journals Effect of Elastic Deformation and Rough Grain Surface on Heat Conduction in Partially Saturated Granular Porous Media

2018 ◽  
Vol 54 (11) ◽  
pp. 9533-9548 ◽  
Author(s):  
Muhammad Fowaz Ikram ◽  
Roohollah Askari ◽  
S. Hossein Hejazi ◽  
Muhammad Sahimi
Keyword(s):  
Porous Media ◽  
Heat Conduction ◽  
Elastic Deformation ◽  
Partially Saturated ◽  
Granular Porous Media ◽  
Grain Surface

Experimental and Numerical Research on Effective Thermal Conductivity of Granular Porous Media

2011 ◽  
Vol 320 ◽  
pp. 353-358
Author(s):  
Yu Feng Shi ◽  
Wen Ce Sun ◽  
Li Hua Shi ◽  
Jing Cui
Keyword(s):  
Thermal Conductivity ◽  
Porous Media ◽  
Effective Thermal Conductivity ◽  
Experimental System ◽  
Two Dimensional ◽  
Infinite Body ◽  
Fractal Method ◽  
Granular Porous Media ◽  
Unsteady Heat Conduction ◽  
Numerical Research

Effective thermal conductivity of granular porous media is investigated by experimental and numerical methods. Using the unsteady heat conduction formula of semi-infinite body, effective thermal conductivity is obtained by measuring temperature field of the experimental system. In this experiment, solid particle is pebble and pore fluid is water or brine with salinity of 20.2%. Granular porous media is not applicable for fractal method, therefore based on structural character of granular porous media; two-dimensional cylinder model is used to calculate effective thermal conductivity of granular porous media in this paper. The simulation results correspond well with the experimental results. This proves that calculating effective thermal conductivity of granular porous media by using this two-dimensional model is accurate. This model could be extrapolated to unsaturated porous media. Research shows that effective thermal conductivity increases logarithmically with the increasing of saturation.

A Model for Thermal Conductivity of Granular Porous Media

1992 ◽  
Vol 114 (2) ◽  
pp. 505-508 ◽  
Author(s):  
F. B. Nimick ◽  
J. R. Leith
Keyword(s):  
Thermal Conductivity ◽  
Porous Media ◽  
Granular Porous Media

Analysis of process of emulsions transport in hydrophilic/oleophilic granular porous media driven by capillary force

2018 ◽  
Vol 2 (21) ◽  
pp. 85-101
Author(s):  
Olga Shtyka ◽  
Łukasz Przybysz ◽  
Mariola Błaszczyk ◽  
Jerzy P. Sęk
Keyword(s):  
Porous Media ◽  
Experimental Research ◽  
Granular Media ◽  
Single Phase ◽  
Influential Factor ◽  
Dispersed Phase ◽  
Porous Structures ◽  
Phase Concentration ◽  
Granular Porous Media ◽  
Kinetics Of

The research focuses on the issues concerning a process of multiphase liquids transport in granular porous media driven by the capillary pressure. The current publication is meant to introduce the results of experimental research conducted to evaluate the kinetics of the imbibition and emulsions behavior inside the porous structures. Moreover, the influence of the dispersed phase concentration and granular media structure on the mentioned process was considered. The medium imbibition with emulsifier-stabilized emulsions composed of oil as the dispersed phase in concentrations of 10 vol%, 30 vol%, and 50 vol%, was investigated. The porous media consisted of oleophilic/hydrophilic beads with a fraction of 200–300 and 600–800 μm. The experimental results provided that the emulsions imbibition in such media depended stronger on its structure compare to single-phase liquids. The increase of the dispersed phase concentration caused an insignificant mass decreasing of the imbibed emulsions and height of its penetration in a sorptive medium. The concentrations of the imbibed dispersions exceeded their initial values, but reduced with permeants front raise in the granular structures that can be defined as the influential factor for wicking process kinetics.

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