Impregnation of a porous ribbon

被引：7
|
作者：
Raphaël, É [1 ]
de Gennes, PG [1 ]
机构：
[1] Coll France, F-75231 Paris 05, France
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE B-MECANIQUE PHYSIQUE ASTRONOMIE | 1999年 / 327卷 / 07期
关键词：
porous media; impregnation; liquid films; wetting;
D O I：
10.1016/S1287-4620(99)80121-5
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We consider a ribbon circulating in a liquid bath (at a velocity V, over a distance L). The ribbon is porous and spontaneously sucks in some liquid. When going out vertically, it drags a Landau-Levich film. But the capillary process goes on: ultimately, the external film vanishes at a certain height H. We discuss the flow and the H value for a very crude mode. We then expect H similar to Ca-7/6, where Ca is the capillary number (assumed to be small). (C) Academie des sciences/Elsevier, Paris.
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页码：685 / 689
页数：5
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