Porous media characterization by the two-liquid method: Effect of dynamic contact angle and inertia

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  • Technion-Israel Institute of Technology
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OriginalspracheEnglisch
Seiten (von - bis)1918-1923
Seitenumfang6
FachzeitschriftLANGMUIR
Jahrgang24
Ausgabenummer5
PublikationsstatusVeröffentlicht - 4 März 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.

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Porous media characterization by the two-liquid method: Effect of dynamic contact angle and inertia. / Lavi, Becky; Marmur, Abraham; Bachmann, Joerg.
in: LANGMUIR, Jahrgang 24, Nr. 5, 04.03.2008, S. 1918-1923.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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author = "Becky Lavi and Abraham Marmur and Joerg Bachmann",
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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.

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DO - 10.1021/la702090x

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VL - 24

SP - 1918

EP - 1923

JO - LANGMUIR

JF - LANGMUIR

SN - 0743-7463

IS - 5

ER -

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