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Comparison of the Use of Washburn's Equation in the Distance–Time and Weight–Time Imbibition Techniques

✍ Scribed by L. Labajos-Broncano; M.L. González-Martı́n; J.M. Bruque; C.M. González-Garcı́a

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
74 KB
Volume
233
Category
Article
ISSN
0021-9797

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✦ Synopsis

Two experimental methods are usually employed to study liquid penetration in porous media. One of them is based on the measure of the height of the advance liquid front vs time, and the other one is based on the measure of the weight gained by the porous system due to the liquid penetration vs time. Generally, the experimental data obtained from these techniques are analyzed through Washburn's equation. However, depending on which of them is selected, different conditions, coming from the experimental method, are needed to be taken into account in order to get the correct application of Washburn's equation to the experimental data. Although these conditions are different for each method, we prove in this paper that only if these conditions are considered both techniques are equivalent to analyze imbibition experiments using Washburn's equation.

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