Please use this identifier to cite or link to this item:
https://hdl.handle.net/2445/9551
Title: | Perturbing Hele-Shaw flow with a small gap gradient |
Author: | Zhao, H. Casademunt i Viader, Jaume Yeung, C. Maher, J. V. |
Keywords: | Dinàmica de fluids Pertorbació (Dinàmica quàntica) Fluid dynamics Perturbation (Quantum dynamics) |
Issue Date: | 1992 |
Publisher: | The American Physical Society |
Abstract: | A controlled perturbation is introduced into the Saffman-Taylor flow problem by adding a gradient to the gap of a Hele-Shaw cell. The stability of the single-finger steady state was found to be strongly affected by such a perturbation. Compared with patterns in a standard Hele-Shaw cell, the single Saffman-Taylor finger was stabilized or destabilized according to the sign of the gap gradient. While a linear stability analysis shows that this perturbation should have a negligible effect on the early-stage pattern formation, the experimental data indicate that the characteristic length for the initial breakup of a flat interface has been changed by the perturbation. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevA.45.2455 |
It is part of: | Physical Review A, 1992, vol. 45, núm. 4, p. 2455-2460. |
URI: | https://hdl.handle.net/2445/9551 |
Related resource: | http://dx.doi.org/10.1103/PhysRevA.45.2455 |
ISSN: | 1050-2947 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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