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Practical observation of deviation from Lucas–Washburn scaling in . . .
Imbibition studies are made by bringing each porous sample into contact with a supersource of liquid and the dynamic imbibition is recorded gravimetrically contact angle and fluid viscosity have been maintained Furthermore, values of average measured pore radius are shown to be finer than the Lucas–Washburn predicted equivalent
The possibility of different time scales in the dynamics of pore imbibition
To model the imbibition of liquids into porous solids, use is often made of the Lucas–Washburn equation, which relates the distance of penetration of a liquid at a given time to the pore radius, the viscosity and surface tension of the liquid, and the effective contact angle between the liquid and the solid In Fig 9, the velocity field
PRACTICAL OBSERVATION OF DEVIATION FROM LUCAS- WASHBURN SCALING . . . - Omya
Imbibition studies are made by bringing each porous sample into contact Schoelkopf et al, Omya AG, CH 4665 Oftringen, Switzerland, joachim schoelkopf@omya com , +41 62 789 22 29 2 with a supersource of liquid and the dynamic imbibition is recorded gravimetrically
Influence of the dynamic contact angle on the characterization of . . .
It has been shown recently that the classical Lucas–Washburn equation, often used to model the dynamics of liquid penetration into porous media, should be modified to take account of the dynamic contact angle between the liquid and the pore Here we show how neglect of this effect can lead to significant errors in estimation of the effective pore radius
Practical observation of deviation from Lucas–Washburn scaling in . . .
Imbibition studies are made by bringing each porous sample into contact with a supersource of liquid and the dynamic imbibition is recorded gravimetrically Results follow a long timescale macroscopic absorption rate depending on the square root of time but show a failure to scale according to pore size in the Lucas–Washburn equation even
Mathematical model of liquid spontaneous imbibition into gas-saturated . . .
A porous medium with dynamic contact angle has a lower initial imbibition rate than that with static contact angle, since the velocity-dependent contact angle reduces the capillary force The dynamic contact angle effect is more significant in higher-permeability porous media and increases with the increase in nondimensional parameter β
Comparison of micro- and macro-wettability measurements and evaluation . . .
The Lucas-Washburn (L-W) equation is the classical theory to describe the dynamics of spontaneous imbibition in single micro-channels and micro-scale porous media However, for nanoliter droplets imbibition in nanoporous media, the L-W equation may not be suitable, due to the nanoscale liquid-solid interactions, e g , contact line pinning and capillary condensation
A review on liquid flow through low-density fibrous porous media
The Lucas-Washburn equation has the underlying assumption of an ideal homogenous porous structure It has been successfully applied to model fluid flow through systems such as sandstone, soil, pomace, sintered metals, ceramics, and many other materials that have essentially uniform, isotropic structure ( Li et al , 2015 , Ridgway et al , 2002 )