- 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.
- Publisher copy:
- 10.1103/physreve.71.016312
-
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- Journal:
- Physical review. E, Statistical, nonlinear, and soft matter physics
- Volume:
- 71
- Issue:
- 1 Pt 2
- Pages:
- 016312
- Publication date:
- 2005-01-05
- DOI:
- EISSN:
-
1550-2376
- ISSN:
-
1539-3755
- URN:
-
uuid:9989bca8-f9cf-4641-b42c-5e22cf62a709
- Source identifiers:
-
176531
- Local pid:
- pubs:176531
- Language:
- English
- Copyright date:
- 2005
Journal article
Lateral instability in normal viscous fingers.
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