Determination of the Air−Water Interfacial Area in Wet “Unsaturated” Porous Media

Langmuir ◽  
1996 ◽  
Vol 12 (8) ◽  
pp. 2041-2044 ◽  
Author(s):  
Milind V. Karkare ◽  
Tomlinson Fort
Keyword(s):  
Porous Media ◽  
Interfacial Area ◽  
Unsaturated Porous Media

Numerical Modeling of Heat and Mass Transport with Inner Heat Exchange in Unsaturated Porous Media

2020 ◽  
Vol 27 ◽  
pp. 166-176
Author(s):  
Jozef Kačur ◽  
Patrik Mihala
Keyword(s):  
Mathematical Model ◽  
Porous Media ◽  
Heat Exchange ◽  
Inverse Problems ◽  
Water Transport ◽  
Heat Conductivity ◽  
Unsaturated Porous Media ◽  
Heat Transmission ◽  
Matrix Heat

We are focused to the numerical modelling of heat, contaminant and water transport in unsaturated porous media in 3D. The heat exchange between water and porous media matrix is taken into the account. The determination of heat energy transmission coefficient and matrix heat conductivity is solved by means of inverse problem methods. The mathematical model represents the conservation of heat, contaminant and water mass balance. It is expressed by coupled non-linear system of parabolic-elliptic equations. Mathematical model for water transport in unsaturated porous media is represented by Richard's type equation. Heat transport by water includes water flux, molecular diffusion and dispersion. A successful experiment scenario is suggested to determine the required parameters including heat transmission and matrix heat conductivity coefficients. Additionally we investigate contaminant transport with heat transmission and contaminant adsorption. The obtained experiments support our method suitable for solution of direct and inverse problems. This problem we have discussed previously in 1D model, but preferential streamlines in 1D thin tubes shadow accurate results in determination of required parameters. In our presented setting we consider a cylindrical sample which is suitable in laboratory experiments for inverse problems.

Determination of Water-Oil Interfacial Area during 3-Phase Gravity Drainage in Porous Media

2000 ◽  
Vol 221 (2) ◽  
pp. 308-312 ◽  
Author(s):  
Charles E. Schaefer ◽  
David A. DiCarlo ◽  
Martin J. Blunt
Keyword(s):  
Porous Media ◽  
Interfacial Area ◽  
Gravity Drainage

X-ray Microtomography Determination of Air−Water Interfacial Area−Water Saturation Relationships in Sandy Porous Media

2008 ◽  
Vol 42 (8) ◽  
pp. 2949-2956 ◽  
Author(s):  
Molly S. Costanza-Robinson ◽  
Katherine H. Harrold ◽  
Ross M. Lieb-Lappen
Keyword(s):  
Porous Media ◽  
Water Saturation ◽  
Interfacial Area ◽  
X Ray

Determination of Air-Water Interfacial Area for Drainage and Imbibition in Unsaturated Porous Media

1999 ◽  
Author(s):  
Charles E. Schaefer ◽  
David A. DiCarlo ◽  
Paul V. Roberts ◽  
Martin J. Blunt
Keyword(s):  
Porous Media ◽  
Water Saturation ◽  
Pore Space ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Interfacial Area ◽  
Gravity Drainage ◽  
Unsaturated Porous Media ◽  
Column Adsorption ◽  
Dodecyl Benzene Sulfonate

Abstract A new experimental method was developed to measure air-water interfacial area as a function of capillary pressure and water saturation in unsaturated porous media. The surfactant sodium dodecyl benzene sulfonate (SDBS) was used in equilibrium column adsorption experiments to determine the air-water interfacial area for water saturations (ml water/ml pore space) ranging from 0.05 to 1.0, and pressures ranging from 0 to 20 cm of water. A comparison was made between columns which were equilibrated under gravity drainage, versus columns equilibrated under secondary imbibition. Gravity drainage experiments showed the air-water interfacial area decreased linearly with saturation, while imbibition experiments showed a more complex non-monotonic relation to the saturation.

Prediction of Air−Water Interfacial Area in Wet Unsaturated Porous Media

Langmuir ◽  
2000 ◽  
Vol 16 (2) ◽  
pp. 829-834 ◽  
Author(s):  
David L. Silverstein ◽  
Tomlinson Fort
Keyword(s):  
Porous Media ◽  
Interfacial Area ◽  
Unsaturated Porous Media

scholarly journals Novel methods for measuring air–water interfacial area in unsaturated porous media

Chemosphere ◽  
2015 ◽  
Vol 127 ◽  
pp. 208-213 ◽  
Author(s):  
Mark L. Brusseau ◽  
Asma El Ouni ◽  
Juliana B. Araujo ◽  
Hua Zhong
Keyword(s):  
Porous Media ◽  
Interfacial Area ◽  
Unsaturated Porous Media ◽  
Novel Methods
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