Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water Flow
This study experimentally investigates the interaction between rising bubbles and swirling water flow imposed around the central (vertical) axis of a bubble plume in a cylindrical water tank. Small air bubbles are successively released from the bottom of the tank to generate a bubble plume, and a st...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/358241 |
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| _version_ | 1832554992275292160 |
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| author | Tomomi Uchiyama Shunsuke Sasaki |
| author_facet | Tomomi Uchiyama Shunsuke Sasaki |
| author_sort | Tomomi Uchiyama |
| collection | DOAJ |
| description | This study experimentally investigates the interaction between rising bubbles and swirling water flow imposed around the central (vertical) axis of a bubble plume in a cylindrical water tank. Small air bubbles are successively released from the bottom of the tank to generate a bubble plume, and a stirring disc at the bottom of the tank is rotated to impose a swirling water flow around the central axis of the bubble plume. The bubbles disperse further with the increasing rotational speed ω of the stirring disc. Some bubbles shift toward the central axis of the swirling flow when ω is high. The nondimensional swirling velocity of water reduces with increasing bubble flow rate when ω is lower than a certain value. However, it is less affected by the bubbles when ω is higher. The precessional amplitude for the upper end of the vortex core increases due to the presence of the bubbles. With increasing ω, the nondimensional precessional velocity decreases, and the bubble effect also reduces. |
| format | Article |
| id | doaj-art-4513d29af35d43f1bec127e8b70b244a |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-4513d29af35d43f1bec127e8b70b244a2025-02-03T05:49:55ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782014-01-01201410.1155/2014/358241358241Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water FlowTomomi Uchiyama0Shunsuke Sasaki1EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, JapanGraduate School of Information Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, JapanThis study experimentally investigates the interaction between rising bubbles and swirling water flow imposed around the central (vertical) axis of a bubble plume in a cylindrical water tank. Small air bubbles are successively released from the bottom of the tank to generate a bubble plume, and a stirring disc at the bottom of the tank is rotated to impose a swirling water flow around the central axis of the bubble plume. The bubbles disperse further with the increasing rotational speed ω of the stirring disc. Some bubbles shift toward the central axis of the swirling flow when ω is high. The nondimensional swirling velocity of water reduces with increasing bubble flow rate when ω is lower than a certain value. However, it is less affected by the bubbles when ω is higher. The precessional amplitude for the upper end of the vortex core increases due to the presence of the bubbles. With increasing ω, the nondimensional precessional velocity decreases, and the bubble effect also reduces.http://dx.doi.org/10.1155/2014/358241 |
| spellingShingle | Tomomi Uchiyama Shunsuke Sasaki Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water Flow International Journal of Chemical Engineering |
| title | Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water Flow |
| title_full | Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water Flow |
| title_fullStr | Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water Flow |
| title_full_unstemmed | Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water Flow |
| title_short | Experimental Investigation of the Interaction between Rising Bubbles and Swirling Water Flow |
| title_sort | experimental investigation of the interaction between rising bubbles and swirling water flow |
| url | http://dx.doi.org/10.1155/2014/358241 |
| work_keys_str_mv | AT tomomiuchiyama experimentalinvestigationoftheinteractionbetweenrisingbubblesandswirlingwaterflow AT shunsukesasaki experimentalinvestigationoftheinteractionbetweenrisingbubblesandswirlingwaterflow |