Behavior of sink and source defects in a one-dimensional traveling finger pattern

Piotr Habdas, Matthew J. Case, and John R. de Bruyn
Phys. Rev. E 63, 066305 – Published 23 May 2001
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Abstract

We present the results of an experimental study of sink and source defects in a one-dimensional pattern of traveling fingers that form at a driven fluid-air interface. We find that sinks and sources behave differently: Sinks separate regions of differing wave number and move smoothly so as to keep the phase difference across the sink fixed. They are transient objects which are eventually destroyed at the boundaries of the experiment or by collision with a source. Sources, on the other hand, are long lived. They are symmetric and stationary on average, although individual sources move erratically and do not display the phase-matching behavior of the sinks.

  • Received 22 December 2000

DOI:https://doi.org/10.1103/PhysRevE.63.066305

©2001 American Physical Society

Authors & Affiliations

Piotr Habdas, Matthew J. Case, and John R. de Bruyn

  • Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada A1B 3X7

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Issue

Vol. 63, Iss. 6 — June 2001

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