Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space
The present paper investigates the bubble collapse dynamics near hydrofoils within a confined space. Experiments involving high-speed photography reveal in detail the typical bubble morphological evolution near different hydrofoils between two glass plates (namely the confined space), and the partit...
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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/S1350417724004231 |
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| author | Junwei Shen Hongbo Wang Cheng Zhang Yuning Zhang Yuning Zhang |
| author_facet | Junwei Shen Hongbo Wang Cheng Zhang Yuning Zhang Yuning Zhang |
| author_sort | Junwei Shen |
| collection | DOAJ |
| description | The present paper investigates the bubble collapse dynamics near hydrofoils within a confined space. Experiments involving high-speed photography reveal in detail the typical bubble morphological evolution near different hydrofoils between two glass plates (namely the confined space), and the partitioning of the thickness-related and camber-related parameters is analyzed quantitatively. Based on conformal transformation, the liquid velocity field and Kelvin impulse are used to analyze the bubble collapse characteristics qualitatively and quantitatively, including the bubble interface motion, cross-sectional roundness, and collapse jet. The main conclusions are summarized as follows. (1) The bubble morphological evolution near the hydrofoils can be categorized into five typical collapse shapes, and their partition ranges are significantly affected by the thickness-related and camber-related parameters. (2) The thickness-related hydrofoil parameter positively correlated with the bubble interface motion and cross-sectional roundness, while the camber-related parameter is inversely correlated with them. (3) High-velocity regions between the bubble and the hydrofoil head and tail endpoints explain the bubble interface depressions observed in the experiments. |
| format | Article |
| id | doaj-art-cdfa72c7a0bb42e584ed0e3ab52ab02d |
| institution | Kabale University |
| issn | 1350-4177 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj-art-cdfa72c7a0bb42e584ed0e3ab52ab02d2025-01-11T06:38:44ZengElsevierUltrasonics Sonochemistry1350-41772025-01-01112107174Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined spaceJunwei Shen0Hongbo Wang1Cheng Zhang2Yuning Zhang3Yuning Zhang4Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China; Corresponding author.College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, ChinaThe present paper investigates the bubble collapse dynamics near hydrofoils within a confined space. Experiments involving high-speed photography reveal in detail the typical bubble morphological evolution near different hydrofoils between two glass plates (namely the confined space), and the partitioning of the thickness-related and camber-related parameters is analyzed quantitatively. Based on conformal transformation, the liquid velocity field and Kelvin impulse are used to analyze the bubble collapse characteristics qualitatively and quantitatively, including the bubble interface motion, cross-sectional roundness, and collapse jet. The main conclusions are summarized as follows. (1) The bubble morphological evolution near the hydrofoils can be categorized into five typical collapse shapes, and their partition ranges are significantly affected by the thickness-related and camber-related parameters. (2) The thickness-related hydrofoil parameter positively correlated with the bubble interface motion and cross-sectional roundness, while the camber-related parameter is inversely correlated with them. (3) High-velocity regions between the bubble and the hydrofoil head and tail endpoints explain the bubble interface depressions observed in the experiments.http://www.sciencedirect.com/science/article/pii/S1350417724004231Bubble dynamicsConfined spaceCollapsing jetKelvin impulseHigh-speed photographic technique |
| spellingShingle | Junwei Shen Hongbo Wang Cheng Zhang Yuning Zhang Yuning Zhang Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space Ultrasonics Sonochemistry Bubble dynamics Confined space Collapsing jet Kelvin impulse High-speed photographic technique |
| title | Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space |
| title_full | Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space |
| title_fullStr | Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space |
| title_full_unstemmed | Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space |
| title_short | Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space |
| title_sort | theoretical and experimental research on the impacts of the joukowsky hydrofoils on the bubble collapse dynamics within a confined space |
| topic | Bubble dynamics Confined space Collapsing jet Kelvin impulse High-speed photographic technique |
| url | http://www.sciencedirect.com/science/article/pii/S1350417724004231 |
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