Dynamics of a spherical bubble rising in gravity, subject to traveling pressure disturbance
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Dec 14, 2018
About this article
Published Online: Dec 14, 2018
Page range: 149 - 158
Received: Oct 10, 2018
Accepted: Dec 04, 2018
DOI: https://doi.org/10.2478/caim-2018-0020
Keywords
© 2018 Giorgio Riccardi, Enrico De Bernardis, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
The motion of a spherical bubble rising in a gravitational field in presence of a traveling pressure step wave is investigated. Equations of motion for the bubble radius and center of mass are deduced and several sample cases are analysed by means of their numerical integration. The crucial role played by the traveling speed of the wave front and by the intensity of the pressure step are discussed. A first comparison with the axisymmetric dynamics is discussed.