Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel
Bubble dynamics is paramount in comprehending the heat transfer mechanisms of flow boiling in the microchannel within ultrasonic field, which is regarded as a promising method to confront challenges of thermal management posed by microelectronic devices. Nevertheless, the impact of ultrasound on bub...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Ultrasonics Sonochemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S135041772400347X |
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| author | Yong Guo Qingqing Zhu Shiliang Song Yan Li Zongbo Zhang Liang Gong |
| author_facet | Yong Guo Qingqing Zhu Shiliang Song Yan Li Zongbo Zhang Liang Gong |
| author_sort | Yong Guo |
| collection | DOAJ |
| description | Bubble dynamics is paramount in comprehending the heat transfer mechanisms of flow boiling in the microchannel within ultrasonic field, which is regarded as a promising method to confront challenges of thermal management posed by microelectronic devices. Nevertheless, the impact of ultrasound on bubble behaviors and its underlying mechanisms remain largely unexplored. This study first delves into the effect of ultrasonic parameters on bubble dynamic behaviors and associated mechanisms, subsequently further analyzing the forces acting on bubbles through the constructed force model. The findings suggest that although growth force serves as the significant resistance, the primary Bjerknes force dominates the rapid detachment of bubbles. The secondary Bjerknes force results in the bubble only sliding along the bottom wall rather than lifting off. Furthermore, the elevated ultrasonic pressure amplitude resulting from augmenting ultrasonic power induces a substantial increase in the critical detachment diameter and growth rate by 55.49 % and 59.42 %, respectively. The enhanced primary Bjerknes force, attributed to the rise in ultrasonic frequency, leads to a 71.42 % increase in sliding velocity and a 46.45 % reduction in growth time. The positive impacts arising from ultrasonic power and frequency are anticipated to notably enhance the thermal performance of microchannels. Besides, surface tension acts as the resistance and diminishes slightly with an augmentation of the boiling number, resulting in a moderate variation in sliding velocity and growth time. |
| format | Article |
| id | doaj-art-ad0bfd65ff3c401e8e0deb5b49a80ed9 |
| institution | OA Journals |
| issn | 1350-4177 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj-art-ad0bfd65ff3c401e8e0deb5b49a80ed92025-08-20T02:32:42ZengElsevierUltrasonics Sonochemistry1350-41772024-12-0111110709910.1016/j.ultsonch.2024.107099Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannelYong Guo0Qingqing Zhu1Shiliang Song2Yan Li3Zongbo Zhang4Liang Gong5College of New Energy, China University of Petroleum (East China), Qingdao, Shandong 266580, PR ChinaCollege of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, PR ChinaCollege of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, PR ChinaCollege of Engineering, Ocean University of China, Qingdao, Shandong 266100, PR ChinaCollege of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China; Corresponding authors.College of New Energy, China University of Petroleum (East China), Qingdao, Shandong 266580, PR China; Corresponding authors.Bubble dynamics is paramount in comprehending the heat transfer mechanisms of flow boiling in the microchannel within ultrasonic field, which is regarded as a promising method to confront challenges of thermal management posed by microelectronic devices. Nevertheless, the impact of ultrasound on bubble behaviors and its underlying mechanisms remain largely unexplored. This study first delves into the effect of ultrasonic parameters on bubble dynamic behaviors and associated mechanisms, subsequently further analyzing the forces acting on bubbles through the constructed force model. The findings suggest that although growth force serves as the significant resistance, the primary Bjerknes force dominates the rapid detachment of bubbles. The secondary Bjerknes force results in the bubble only sliding along the bottom wall rather than lifting off. Furthermore, the elevated ultrasonic pressure amplitude resulting from augmenting ultrasonic power induces a substantial increase in the critical detachment diameter and growth rate by 55.49 % and 59.42 %, respectively. The enhanced primary Bjerknes force, attributed to the rise in ultrasonic frequency, leads to a 71.42 % increase in sliding velocity and a 46.45 % reduction in growth time. The positive impacts arising from ultrasonic power and frequency are anticipated to notably enhance the thermal performance of microchannels. Besides, surface tension acts as the resistance and diminishes slightly with an augmentation of the boiling number, resulting in a moderate variation in sliding velocity and growth time.http://www.sciencedirect.com/science/article/pii/S135041772400347XBubble dynamic behaviorFlow boilingMicrochannelUltrasonic fieldForce analysis |
| spellingShingle | Yong Guo Qingqing Zhu Shiliang Song Yan Li Zongbo Zhang Liang Gong Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel Ultrasonics Sonochemistry Bubble dynamic behavior Flow boiling Microchannel Ultrasonic field Force analysis |
| title | Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel |
| title_full | Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel |
| title_fullStr | Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel |
| title_full_unstemmed | Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel |
| title_short | Effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel |
| title_sort | effects of ultrasound on bubble dynamic behavior of flow boiling in microchannel |
| topic | Bubble dynamic behavior Flow boiling Microchannel Ultrasonic field Force analysis |
| url | http://www.sciencedirect.com/science/article/pii/S135041772400347X |
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