Convective transport of gases in moist porous media: effect of absorption, adsorption, and diffusion in soil aggregates

1992 ◽  
Vol 26 (12) ◽  
pp. 2468-2476 ◽  
Author(s):  
Benjamin J. McCoy ◽  
Dennis E. Rolston
Keyword(s):  
Porous Media ◽  
Soil Aggregates ◽  
Convective Transport ◽  
Media Effect ◽  
And Diffusion

PERMEABILITY AND DIFFUSION COEFFICIENT PREDICTION OF FRACTAL POROUS MEDIA WITH NANOSCALE PORES FOR GAS TRANSPORT

2018 ◽  
Vol 21 (12) ◽  
pp. 1253-1263
Author(s):  
Ruifei Wang ◽  
Hongqing Song ◽  
Jiulong Wang ◽  
Yuhe Wang
Keyword(s):  
Porous Media ◽  
Diffusion Coefficient ◽  
Gas Transport ◽  
And Diffusion

Mass Transport Modelling in Porous Media Using Delay Differential Equations

2006 ◽  
Vol 258-260 ◽  
pp. 586-591
Author(s):  
António Martins ◽  
Paulo Laranjeira ◽  
Madalena Dias ◽  
José Lopes
Keyword(s):  
Porous Media ◽  
Differential Equations ◽  
Mass Transport ◽  
Delay Differential Equations ◽  
Dispersion Model ◽  
Flow Characteristics ◽  
Convective Transport ◽  
Transport Modelling ◽  
Flow Field Characteristics ◽  
Delay Differential

In this work the application of delay differential equations to the modelling of mass transport in porous media, where the convective transport of mass, is presented and discussed. The differences and advantages when compared with the Dispersion Model are highlighted. Using simplified models of the local structure of a porous media, in particular a network model made up by combining two different types of network elements, channels and chambers, the mass transport under transient conditions is described and related to the local geometrical characteristics. The delay differential equations system that describe the flow, arise from the combination of the mass balance equations for both the network elements, and after taking into account their flow characteristics. The solution is obtained using a time marching method, and the results show that the model is capable of describing the qualitative behaviour observed experimentally, allowing the analysis of the influence of the local geometrical and flow field characteristics on the mass transport.

Polymer-Modified Fe0Nanoparticles Target Entrapped NAPL in Two Dimensional Porous Media: Effect of Particle Concentration, NAPL Saturation, and Injection Strategy

2011 ◽  
Vol 45 (14) ◽  
pp. 6102-6109 ◽  
Author(s):  
Tanapon Phenrat ◽  
Fritjof Fagerlund ◽  
Tissa Illangasekare ◽  
Gregory V. Lowry ◽  
Robert D. Tilton
Keyword(s):  
Porous Media ◽  
Particle Concentration ◽  
Two Dimensional ◽  
Media Effect ◽  
Injection Strategy
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