Upward creep of a wetting fluid : a scaling analysisReport as inadecuate




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Abstract : A Van der Waals fluid, climbing from a reservoir along a vertical wall, should display a remarkable cascade of events : i A macroscopic meniscus is set up in a short time t1 and reaches the classical altitude hc∼ 1 mm. ii A dynamic precursor film appears at a time t2 ∼ 10-2 s. The tip of the « tongue» advances fast up to a time t3 ∼ 1 s and then more slowly. iii A portion of static film builds up from hc, up to a certain altitude h1t at times t > t4 t4∼ 10 s. iv A self-similar, slow, growth of both the « tongue» and the static portion is reached after a time t = t5 ∼ 10 days.

Mots-clés : liquid films wetting





Author: J.F. Joanny P.-G. De Gennes

Source: https://hal.archives-ouvertes.fr/



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