Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary
The bubbles have been widely used in biomedical field, military and chemical industry. The liquid jet generated by the bubble collapse through an orifice is utilized in needle-free injections and inkjet printing. In this paper we devised synchronized triggering equipment, experimentally investigated...
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2021-07-01
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doaj-33a3234455ec4604b910060a900357e92021-06-19T04:52:46ZengElsevierUltrasonics Sonochemistry1350-41772021-07-0175105587Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundaryJie Cui0Tao-Ran Zhou1Xiao Huang2Zi-Chao Li3School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaShipbuilding Technology Research Institute, Shanghai 200032, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China; Corresponding author.Shanghai Rules & Research Institute, China Classification Society, Shanghai 200135, ChinaThe bubbles have been widely used in biomedical field, military and chemical industry. The liquid jet generated by the bubble collapse through an orifice is utilized in needle-free injections and inkjet printing. In this paper we devised synchronized triggering equipment, experimentally investigated the mechanism in the interaction of an electric-spark generated a single bubble and a vertical wall with an air-back opening. Detailed observations were recorded and described for bubble oscillation, migration, jetting, as well as the high-speed water spike penetrating through the opening. The results revealed that there was a critical value of the bubble-wall distance, below which the bubble was directed away from the incomplete boundary, while the bubble may tear from the middle for larger distance. As the distance varied, we studied the volume of the water that rushed through the opening, the velocity at the tip of the water spike, and the center of the bubble as well as the migration of the bubble boundary. This work reveals that the high-speed water spike caused by the bubble may be a potential threat to the structures, specifically for cases with a small opening size and short bubble-boundary distance.http://www.sciencedirect.com/science/article/pii/S1350417721001292Bubble dynamicsUnderwater explosionIncomplete boundaryInrushing water |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jie Cui Tao-Ran Zhou Xiao Huang Zi-Chao Li |
spellingShingle |
Jie Cui Tao-Ran Zhou Xiao Huang Zi-Chao Li Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary Ultrasonics Sonochemistry Bubble dynamics Underwater explosion Incomplete boundary Inrushing water |
author_facet |
Jie Cui Tao-Ran Zhou Xiao Huang Zi-Chao Li |
author_sort |
Jie Cui |
title |
Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary |
title_short |
Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary |
title_full |
Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary |
title_fullStr |
Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary |
title_full_unstemmed |
Experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary |
title_sort |
experimental study of bubble dynamics in the neighbourhood of a vertical incomplete boundary |
publisher |
Elsevier |
series |
Ultrasonics Sonochemistry |
issn |
1350-4177 |
publishDate |
2021-07-01 |
description |
The bubbles have been widely used in biomedical field, military and chemical industry. The liquid jet generated by the bubble collapse through an orifice is utilized in needle-free injections and inkjet printing. In this paper we devised synchronized triggering equipment, experimentally investigated the mechanism in the interaction of an electric-spark generated a single bubble and a vertical wall with an air-back opening. Detailed observations were recorded and described for bubble oscillation, migration, jetting, as well as the high-speed water spike penetrating through the opening. The results revealed that there was a critical value of the bubble-wall distance, below which the bubble was directed away from the incomplete boundary, while the bubble may tear from the middle for larger distance. As the distance varied, we studied the volume of the water that rushed through the opening, the velocity at the tip of the water spike, and the center of the bubble as well as the migration of the bubble boundary. This work reveals that the high-speed water spike caused by the bubble may be a potential threat to the structures, specifically for cases with a small opening size and short bubble-boundary distance. |
topic |
Bubble dynamics Underwater explosion Incomplete boundary Inrushing water |
url |
http://www.sciencedirect.com/science/article/pii/S1350417721001292 |
work_keys_str_mv |
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