Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater Tube
In this paper, the characteristics of a pulsating bubble collapse near the nozzle of an underwater tube were investigated both experimentally and numerically. The experiments involved generating pulsating bubbles using the electric spark discharge technology and capturing their transient behavior by...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Shanghai Jiao Tong University
2025-01-01
|
| Series: | Shanghai Jiaotong Daxue xuebao |
| Subjects: | |
| Online Access: | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-1-99.shtml |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832086857299525632 |
|---|---|
| author | ZHANG Yueyao, QIAO Feng, LÜ Xiang, ZHANG Tianyuan, HAN Rui, LI Shuai |
| author_facet | ZHANG Yueyao, QIAO Feng, LÜ Xiang, ZHANG Tianyuan, HAN Rui, LI Shuai |
| author_sort | ZHANG Yueyao, QIAO Feng, LÜ Xiang, ZHANG Tianyuan, HAN Rui, LI Shuai |
| collection | DOAJ |
| description | In this paper, the characteristics of a pulsating bubble collapse near the nozzle of an underwater tube were investigated both experimentally and numerically. The experiments involved generating pulsating bubbles using the electric spark discharge technology and capturing their transient behavior by high-speed photography. A boundary integral method based on potential flow theory was used to simulate the coupling between the bubble and the tube in the numerical simulation. The results show that the collapsing bubble can produce a jet directed towards the tube, which poses a safety threat to the pipeline equipment. The numerical simulation results and experimental phenomena are in good agreement. In addition, a systematic study was conducted of two dimensionless parameters, i.e., the ratio of bubble distance from the tube nozzle and the tube nozzle radius γ and the ratio of the maximum radius of the bubble and the tube nozzle radius λ. The findings indicate that when γ≤1.5, bubbles will only produce jets pointing into the tube during the collapse phase, and when γ>1.5, the tendency for bubbles to produce jets pointing into the tube increases as λ increases. Moreover, the maximum velocity of the downward jet increases with the increase of λ, and increases and then decreases with the increase of γ. Additionally, the maximum velocity of the downward jet generally increases with the increase of λ and increases and then decreases with the increase of γ. This study provides valuable insights into the dynamic behavior of bubble collapse near the nozzle of a submerged tube, which can provide safety measures for pipeline equipment. |
| format | Article |
| id | doaj-art-7c09e9a4ce514c34b76494147c81ab6d |
| institution | Kabale University |
| issn | 1006-2467 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj-art-7c09e9a4ce514c34b76494147c81ab6d2025-02-06T09:45:28ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672025-01-015919911010.16183/j.cnki.jsjtu.2023.118Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater TubeZHANG Yueyao, QIAO Feng, LÜ Xiang, ZHANG Tianyuan, HAN Rui, LI Shuai0a. College of Nuclear Science and Technology; b. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaIn this paper, the characteristics of a pulsating bubble collapse near the nozzle of an underwater tube were investigated both experimentally and numerically. The experiments involved generating pulsating bubbles using the electric spark discharge technology and capturing their transient behavior by high-speed photography. A boundary integral method based on potential flow theory was used to simulate the coupling between the bubble and the tube in the numerical simulation. The results show that the collapsing bubble can produce a jet directed towards the tube, which poses a safety threat to the pipeline equipment. The numerical simulation results and experimental phenomena are in good agreement. In addition, a systematic study was conducted of two dimensionless parameters, i.e., the ratio of bubble distance from the tube nozzle and the tube nozzle radius γ and the ratio of the maximum radius of the bubble and the tube nozzle radius λ. The findings indicate that when γ≤1.5, bubbles will only produce jets pointing into the tube during the collapse phase, and when γ>1.5, the tendency for bubbles to produce jets pointing into the tube increases as λ increases. Moreover, the maximum velocity of the downward jet increases with the increase of λ, and increases and then decreases with the increase of γ. Additionally, the maximum velocity of the downward jet generally increases with the increase of λ and increases and then decreases with the increase of γ. This study provides valuable insights into the dynamic behavior of bubble collapse near the nozzle of a submerged tube, which can provide safety measures for pipeline equipment.https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-1-99.shtmlbubble dynamicsbubbles near the nozzle of the tubeboundary integral methodhigh-speed photography |
| spellingShingle | ZHANG Yueyao, QIAO Feng, LÜ Xiang, ZHANG Tianyuan, HAN Rui, LI Shuai Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater Tube Shanghai Jiaotong Daxue xuebao bubble dynamics bubbles near the nozzle of the tube boundary integral method high-speed photography |
| title | Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater Tube |
| title_full | Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater Tube |
| title_fullStr | Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater Tube |
| title_full_unstemmed | Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater Tube |
| title_short | Pulsating Bubble Collapse and Jet Characteristics Near the Nozzle of Underwater Tube |
| title_sort | pulsating bubble collapse and jet characteristics near the nozzle of underwater tube |
| topic | bubble dynamics bubbles near the nozzle of the tube boundary integral method high-speed photography |
| url | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-1-99.shtml |
| work_keys_str_mv | AT zhangyueyaoqiaofengluxiangzhangtianyuanhanruilishuai pulsatingbubblecollapseandjetcharacteristicsnearthenozzleofunderwatertube |