Details
| Original language | English |
|---|---|
| Pages (from-to) | 1918-1923 |
| Number of pages | 6 |
| Journal | LANGMUIR |
| Volume | 24 |
| Issue number | 5 |
| Publication status | Published - 4 Mar 2008 |
Abstract
The validity of using the Lucas-Washburn (LW) equation for porous media characterization by the two-liquid capillary penetration method was tested numerically and experimentally. A cylindrical capillary of known radius and contact angle was used as a model system for the tests. It was found that using the LW equation (i.e., ignoring inertia and dynamic contact angle effects) may lead to very erroneous assessment of the capillary radius and the equilibrium contact angle, for a relatively wide range of capillary radii and equilibrium contact angles. A correct assessment requires the application of a penetration kinetics equation that considers inertia and the dynamic contact angle.
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Chemistry(all)
- Spectroscopy
- Chemistry(all)
- Electrochemistry
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In: LANGMUIR, Vol. 24, No. 5, 04.03.2008, p. 1918-1923.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Porous media characterization by the two-liquid method
T2 - Effect of dynamic contact angle and inertia
AU - Lavi, Becky
AU - Marmur, Abraham
AU - Bachmann, Joerg
N1 - Copyright: Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/3/4
Y1 - 2008/3/4
N2 - The validity of using the Lucas-Washburn (LW) equation for porous media characterization by the two-liquid capillary penetration method was tested numerically and experimentally. A cylindrical capillary of known radius and contact angle was used as a model system for the tests. It was found that using the LW equation (i.e., ignoring inertia and dynamic contact angle effects) may lead to very erroneous assessment of the capillary radius and the equilibrium contact angle, for a relatively wide range of capillary radii and equilibrium contact angles. A correct assessment requires the application of a penetration kinetics equation that considers inertia and the dynamic contact angle.
AB - The validity of using the Lucas-Washburn (LW) equation for porous media characterization by the two-liquid capillary penetration method was tested numerically and experimentally. A cylindrical capillary of known radius and contact angle was used as a model system for the tests. It was found that using the LW equation (i.e., ignoring inertia and dynamic contact angle effects) may lead to very erroneous assessment of the capillary radius and the equilibrium contact angle, for a relatively wide range of capillary radii and equilibrium contact angles. A correct assessment requires the application of a penetration kinetics equation that considers inertia and the dynamic contact angle.
UR - http://www.scopus.com/inward/record.url?scp=41849093001&partnerID=8YFLogxK
U2 - 10.1021/la702090x
DO - 10.1021/la702090x
M3 - Article
AN - SCOPUS:41849093001
VL - 24
SP - 1918
EP - 1923
JO - LANGMUIR
JF - LANGMUIR
SN - 0743-7463
IS - 5
ER -