Abstract
Surface tension effects on fluid sloshing in a tank subjected to external excitation has been less studied. This work aims at understanding this phenomenon in order to derive practical solutions to problems faced in several engineering. A tank containing a fluid with a free surface is submitted to gravity and capillary forces and subject to external dynamic excitation. Introduction of vertical sinusoidal dynamical excitation leads to a problem of paramtric oscillations governed by the Mathieu equation. Analysis of the Mathieu equation shows the existence of stable and unstable regions in the stability diagram. Some results induced by harmonic excitations on the fluid sloshing are presented. When the external dynamical excitation amplitude ε is small, periodic solutions appear in stable regions and when ε increases, the fluid behavior is not perfectly periodic and the amplitudes are not regular. Nonlinear effects make the behavior of the fluid complicated and render it almost unpredictable. In stable regions, the solution remains bounded at any time. When changing the perturbation parameter ε, the phase difference increases and also with the increase of the surface tension.
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Biography: Meziani Bachir (1969-), Male, Ph. D., Professor
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Meziani, B., Ourrad, O. Capillary effect on the sloshing of a fluid in a rectangular tank submitted to sinusoidal vertical dynamical excitation. J Hydrodyn 26, 326–338 (2014). https://doi.org/10.1016/S1001-6058(14)60036-6
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DOI: https://doi.org/10.1016/S1001-6058(14)60036-6