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Experimental Investigation on the Resonance of a Liquid Column in a Capillary Tube

โœ Scribed by Markus Hilpert; Cass T. Miller


Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
112 KB
Volume
219
Category
Article
ISSN
0021-9797

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โœฆ Synopsis


Using a visualization technique, we observed the resonance of a water column trapped in a vertically oriented capillary tube due to acoustic excitation. The analysis of the quasi-static response suggests that the upper nonvisible meniscus followed the imposed flow by means of a sliding contact line without changing its shape. We compared the experiments with a previously developed theoretical model that addresses dissipation by assuming an axially symmetric and incompressible flow field that is spatially constant along the tube axis. Whereas the model agrees well with the measured quasi-static response, the deviations in the dynamic response reveal shortcomings of the model due to the simplified treatment of the viscous dissipation.


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