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Interfacial Wave Motions Due to Marangoni Instability: II. Three-Dimensional Characteristics of Surface Waves in Annular Containers

✍ Scribed by A. Wierschem; M.G. Velarde; H. Linde; W. Waldhelm

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 789 KB
Volume: 212
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.1998.6071

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✦ Synopsis

In annular containers, traveling periodic wavetrains are generated in liquid layers due to the surface adsorption and subsequent liquid absorption of a miscible surface-active substance. First, localized nucleation of shock-wave-like disturbances are generated by the Marangoni effect. Then, these disturbances yield to surface-wave trains with three-dimensional features which travel through the annular container or to stationary source-and-sink states. To illustrate these phenomena we provide shadowgraph pictures of the waves, space-time diagrams showing the wave evolution and wave modulation, mean frequency of wavetrains as a function of the wave mode, surface deformation, peak-to-trough wave amplitudes, wave sources and sinks, and the time evolution of the estimated Marangoni number. Copyright 1999 Academic Press.

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