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Dynamics of capillary rise
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
2000 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 228, 263-269 p.Article in journal (Refereed)
Abstract [en]

An overview and detailed analysis of the classical theory of capillarity is presented. A number of known equations of capillary rise dynamics are shown to be different limiting cases of one rather general equation. Some internal inconsistencies of the classical equations are pointed out. The role of non-linear dissipation and flow pattern effects in the front zone of the liquid column and near the capillary entrance is discussed. Numerical simulations and experimental data demonstrating some characteristic types of dynamic behavior predicted by the theory are reported. A special attention is paid to the capillary rise of surfactant solutions. As applied to this special case, the existing theory is substantially elaborated by setting up a closed system of equations describing the surfactant transport and relaxation processes in the adsorption layer. A simplified relation for the capillary rise dynamics in the case of strong depletion of the interfacial region is obtained, which is in qualitative agreement with the experimental behavior.

Place, publisher, year, edition, pages
2000. Vol. 228, 263-269 p.
Keyword [en]
Capillarity, Lucas-Washburn equation, surfactants
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26709OAI: oai:DiVA.org:ri-26709DiVA: diva2:1053712
Note
A1319Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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