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Journal of Porous Media

Impact factor: 1.035

ISSN Print: 1091-028X
ISSN Online: 1934-0508

Volumes:
Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v14.i5.40
pages 411-422

CAPILLARY RISE IN A NON-UNIFORM TUBE

Mohamed El Amine Ben Amara
Laboratoire d'Etudes des Systemes Thermiques et Energetiques, Ecole Nationale d'Ingenieurs de Monastir, Monastir 5019, Tunisia
Sassi Ben Nasrallah
Laboratoire d'Etudes des Systemes Thermiques et Energetiques, Ecole Nationale d'Ingenieurs de Monastir, Monastir 5019, Tunisia

ABSTRACT

In this paper we describe the liquid progression in a non-uniform capillary in the case where the inertia effects are considered. The approach is based on the application of Newton’s second law on the liquid column. Numerical solutions are obtained by solving a general differential equation describing the time-dependent rise of the liquid-gas interface. The effect of capillary geometry on the progress of the liquid interface has been investigated in conical and sinusoidal capillaries while varying several parameters, such as cone opening angle α in both converging and diverging tubes and the undulation of a sinusoidal capillary. The influence of inertia and viscosity on the equilibrium height and on the rise dynamics is investigated. The results allow better comprehension of the capillary rise in complex geometry under inertia effects and these might provide further explanation for fluid distribution in modeled porous media.