In a recent paper, Caps et al. described parabolic flight experiments showing the movement of liquid into the foam during the microgravity phase. In this comment, we present a detailed theory of this process, supported by numerical calculations, confirming their conclusion that the wetting front moves with the square root of time. We further show that this diffusion process is similar for different surfactant systems, which allows us to provide bounds on the value of the diffusion coefficient.
|Nifer y tudalennau
|European Physical Journal B: Condensed Matter and Complex Systems
|Dynodwyr Gwrthrych Digidol (DOIs)
|Cyhoeddwyd - Gorff 2004