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Article overview
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Relevance of dynamic wetting in viscous fingering patterns | | E Alvarez-Lacalle
; J Ortín
; J Casademunt
; | | Date: |
31 Jul 2006 | | Journal: | Phys Rev E, 74 (2 Pt 2), 025302 | | Abstract: | We demonstrate that wetting effects at moving contact lines have a strong impact in viscous fingering patterns. Experiments in a rotating Hele-Shaw (HS) cell, dry or prewetted, show consistent morphological differences. When the wetting fluid invades a dry region, contact angle dynamics yield a kinetic contribution to the interface pressure drop that scales with capillary number as Ca(2/3) but is significantly larger than the Park-Homsy kinetic correction. Numerical results are in very good agreement with experiments and show that standard HS equations work best for prewetted cells. | | Source: | PubMed, pmid17025495 | | Services: | Forum | Review | Favorites | |
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