Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic field
The dynamics of acoustic cavitation bubbles hold significant importance in ultrasonic cleaning, biomedicine, and chemistry. Utilizing an in-situ normal pressure bubble generation and observation system that was developed, this study examined the translational behavior of micrometer-scale normal pres...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Ultrasonics Sonochemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417724004371 |
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| author | Xiao Huang Peng-Bo Liu Guang-Yun Niu Hai-Bao Hu |
| author_facet | Xiao Huang Peng-Bo Liu Guang-Yun Niu Hai-Bao Hu |
| author_sort | Xiao Huang |
| collection | DOAJ |
| description | The dynamics of acoustic cavitation bubbles hold significant importance in ultrasonic cleaning, biomedicine, and chemistry. Utilizing an in-situ normal pressure bubble generation and observation system that was developed, this study examined the translational behavior of micrometer-scale normal pressure bubble pairs with initial radius ratio of 1:1 and 2:1 under ultrasonic field excitation. A velocity-distance curve was proposed to quantify the secondary Bjerknes forces during various interaction stages of the bubbles. The findings revealed that equal-sized bubbles underwent an acceleration phase, a deceleration phase, and a velocity jump phase during attraction in both strong and weak acoustic fields. In contrast, bubbles of unequal sizes, due to different oscillation frequencies, experienced multiple acceleration and deceleration phases, presenting asynchronous behaviors. The study further explored the effects of the initial bubble radius, shape oscillation, and volume oscillations on the attraction speed. Results showed that the velocity of the bubble’s centroid decreased with an increase in the initial radius, while intensified volume oscillations increased the secondary Bjerknes force, thereby increasing the centroid’s velocity. Moreover, strong acoustic fields were more likely to induce severe volume and shape oscillations in bubbles than weak fields. The irregular shape oscillations in twin bubbles resulted in shortened durations of acceleration and deceleration phases, reduced peak velocities of acceleration phase, and diminished acceleration during the velocity jump phase. The research provided some mechanical explanations for acoustic cavitation dynamics and its applications. |
| format | Article |
| id | doaj-art-48b14daffeed4845a5e289fb1c57381b |
| institution | Kabale University |
| issn | 1350-4177 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj-art-48b14daffeed4845a5e289fb1c57381b2025-01-11T06:38:47ZengElsevierUltrasonics Sonochemistry1350-41772025-01-01112107188Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic fieldXiao Huang0Peng-Bo Liu1Guang-Yun Niu2Hai-Bao Hu3School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, Guangdong, China; Corresponding author at: School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, China.School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, ChinaThe dynamics of acoustic cavitation bubbles hold significant importance in ultrasonic cleaning, biomedicine, and chemistry. Utilizing an in-situ normal pressure bubble generation and observation system that was developed, this study examined the translational behavior of micrometer-scale normal pressure bubble pairs with initial radius ratio of 1:1 and 2:1 under ultrasonic field excitation. A velocity-distance curve was proposed to quantify the secondary Bjerknes forces during various interaction stages of the bubbles. The findings revealed that equal-sized bubbles underwent an acceleration phase, a deceleration phase, and a velocity jump phase during attraction in both strong and weak acoustic fields. In contrast, bubbles of unequal sizes, due to different oscillation frequencies, experienced multiple acceleration and deceleration phases, presenting asynchronous behaviors. The study further explored the effects of the initial bubble radius, shape oscillation, and volume oscillations on the attraction speed. Results showed that the velocity of the bubble’s centroid decreased with an increase in the initial radius, while intensified volume oscillations increased the secondary Bjerknes force, thereby increasing the centroid’s velocity. Moreover, strong acoustic fields were more likely to induce severe volume and shape oscillations in bubbles than weak fields. The irregular shape oscillations in twin bubbles resulted in shortened durations of acceleration and deceleration phases, reduced peak velocities of acceleration phase, and diminished acceleration during the velocity jump phase. The research provided some mechanical explanations for acoustic cavitation dynamics and its applications.http://www.sciencedirect.com/science/article/pii/S1350417724004371Ultrasonic waveBubble pairSecondary Bjerknes force |
| spellingShingle | Xiao Huang Peng-Bo Liu Guang-Yun Niu Hai-Bao Hu Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic field Ultrasonics Sonochemistry Ultrasonic wave Bubble pair Secondary Bjerknes force |
| title | Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic field |
| title_full | Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic field |
| title_fullStr | Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic field |
| title_full_unstemmed | Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic field |
| title_short | Experimental study on the translation behavior of an in-situ bubble pair in the ultrasonic field |
| title_sort | experimental study on the translation behavior of an in situ bubble pair in the ultrasonic field |
| topic | Ultrasonic wave Bubble pair Secondary Bjerknes force |
| url | http://www.sciencedirect.com/science/article/pii/S1350417724004371 |
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