Note: Falling slugs

José Bico; David Quéré

doi:10.1006/jcis.2001.7891

Note: Falling slugs

José Bico
, David Quéré

Collège de France

Research output: Contribution to journal › Article › peer-review

Abstract

The fall of viscous slugs in vertical capillary tubes is described. Deviations toward Poiseuille law are analyzed by taking into account the dissipation in menisci, together with the existence of a film behind the slug. Slugs are found to fall slower in dry tubes than in prewetted ones, which is quantitatively discussed in term of viscous friction. A criterion for the minimal length of the slug obeying the Poiseuille solution is finally derived.

Original language	English
Pages (from-to)	262-264
Number of pages	3
Journal	Journal of Colloid and Interface Science
Volume	243
Issue number	1
DOIs	https://doi.org/10.1006/jcis.2001.7891
Publication status	Published - 1 Nov 2001
Externally published	Yes

Keywords

Dynamic contact angle
Poiseuille law

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10.1006/jcis.2001.7891

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title = "Note: Falling slugs",

abstract = "The fall of viscous slugs in vertical capillary tubes is described. Deviations toward Poiseuille law are analyzed by taking into account the dissipation in menisci, together with the existence of a film behind the slug. Slugs are found to fall slower in dry tubes than in prewetted ones, which is quantitatively discussed in term of viscous friction. A criterion for the minimal length of the slug obeying the Poiseuille solution is finally derived.",

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AU - Quéré, David

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AB - The fall of viscous slugs in vertical capillary tubes is described. Deviations toward Poiseuille law are analyzed by taking into account the dissipation in menisci, together with the existence of a film behind the slug. Slugs are found to fall slower in dry tubes than in prewetted ones, which is quantitatively discussed in term of viscous friction. A criterion for the minimal length of the slug obeying the Poiseuille solution is finally derived.

KW - Dynamic contact angle

KW - Poiseuille law

UR - https://www.scopus.com/pages/publications/0035504170

U2 - 10.1006/jcis.2001.7891

DO - 10.1006/jcis.2001.7891

M3 - Article

AN - SCOPUS:0035504170

SN - 0021-9797

VL - 243

SP - 262

EP - 264

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

IS - 1

ER -

Note: Falling slugs

Abstract

Keywords

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