- Abstract:
- We study a low-amplitude, long-wavelength lateral instability of the Saffman-Taylor finger by means of a phase-field model. We observe such an instability in two situations in which small dynamic perturbations are overimposed to a constant pressure drop. We first study the case in which the perturbation consists of a single oscillatory mode and then a case in which the perturbation consists of temporal noise. In both cases the instability undergoes a process of selection. © 2005 The American Physical Society.
- Publication status:
- Published
- Publisher copy:
- 10.1103/PhysRevE.71.016312
-
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- Journal:
- PHYSICAL REVIEW E
- Volume:
- 71
- Issue:
- 1
- Publication date:
- 2005-01-05
- DOI:
- EISSN:
-
1550-2376
- ISSN:
-
1063-651X
- URN:
-
uuid:abe554ab-9602-4bf7-a9f6-f422cbf4d448
- Source identifiers:
-
176538
- Local pid:
- pubs:176538
- Language:
- English
- Copyright date:
- 2005
Journal article
Lateral instability in normal viscous fingers
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