Data on Rate of Capillary Rise

Abstract

General aspects of the dynamics of capillary rise are considered with references to extant theories. A stroboscopic method used to study the rise of a liquid in a capillary tube is discussed. Tables are presented showing the observed heights at various times during the rise for the liquids—water, ethyl alcohol, and glycol in each of three capillaries of different diameters.

Spontaneous Penetration of Liquids into Capillaries and Porous Membranes Revisited

“…Indeed, the initial velocity due to Eq. [1] is infinite, in obvious contradiction with high-resolution observations (1,2,6,7,(15)(16)(17)(18)(19)(20)(21). Miller and Tyomkin, who designed a number of instruments and suggested various methods for studying spontaneous uptake experimentally, have come to the ultimate conclusion that the LW equation is inapplicable for various fibrous materials (22)(23)(24).…”

“…Dynamic contact angle effects and associated problems of meniscus formation are also neglected. These problems are poorly understood, yet existing practice (1,15,17) shows that the time of meniscus formation is much less than the time scale under consideration. Although beyond the main scope of this paper, the question will be briefly addressed under Discussion.…”

Effect of Capillary Element Aspect Ratio on the Dynamic Imbibition within Porous Networks

“…He claimed that the Letelier approach ignored the correction for converging flow at the capillary entry. He compared his own equation, and the two others noted, with data from LeGrand and Rense (29). Ichikawa and Satoda (19) in 1993 (not referring to Levine's 1979 work) claimed that Letelier did not account for inertia during the inlet acceleration.…”

The influence of the gas phase on liquid imbibition in capillary tubes

“…Although (1.1) has been verified experimentally by many studies over many years (e.g. LeGrand & Rense 1945;Good & Lin 1976;Fisher & Lark 1979), it has several shortcomings. For instance, the derivation of (1.1) neglects inertia, development of the flow field, dissipation at the contact line and any entrance effects, which are all features that have been subsequently analysed (see for example Bosanquet 1923;Szekely, Neumann & Chuang 1971;Quere 1997;Kornev & Neimark 2001).…”