The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2018
Session ID : OS2-19
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Breakup process of a bubble cloud ejected into a main flow
*Takuji IKEDAMasaki FUCHIWAKI
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

Many studies on the dynamic behaviors of bubble in the jet in cross flow have been already reported in both experimental and numerical approaches. However, the break-up mechanism has not been understood. The authors are trying to understand the break-up mechanism from the bubble cloud to small bubbles. In this study, the authors tried to clarify the break-up process from the bubble cloud in the jet in cross flow to small bubbles using by VOF method using ANSYS CFX 17.2. The waves on the surface of the bubble cloud synchronized with the karman vortex street. Moreover, the break-up of the bubble from the bubble cloud also synchronized with the dynamic behavior of the karman vortex. Based on these results, it is predicted that the dynamic behavior of the karman vortex rolled up from the cylinder contributes to the break-up of the bubble from the bubble cloud.

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© 2018 The Japan Society of Mechanical Engineers
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