Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock Waves
Understanding the kinetic behavior at the scale of a single bubble is crucial for understanding cavitation flow properties. In this study, experiments and numerical analysis of shock waves resulting from the crumpling of a solitary adjacent wall vacuole have been conducted. Shock wave characteristic...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2025-01-01
|
| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.jafmonline.net/article_2579_9814ea857dd53288e2365f237dc3a687.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841559998662967296 |
|---|---|
| author | W. Han Y. Xian R. Li W. Li Y. Hao Y. Chen |
| author_facet | W. Han Y. Xian R. Li W. Li Y. Hao Y. Chen |
| author_sort | W. Han |
| collection | DOAJ |
| description | Understanding the kinetic behavior at the scale of a single bubble is crucial for understanding cavitation flow properties. In this study, experiments and numerical analysis of shock waves resulting from the crumpling of a solitary adjacent wall vacuole have been conducted. Shock wave characteristics induced by near-wall bubble collapse were investigated using high-speed photography and shadowgraphy techniques. Numerical simulations were conducted of near-wall vacuole collapse-induced shock-wave dynamics using the OpenFOAM cavitatingFoam solver. (1) The shock wave displays an essentially symmetrical distribution. The pressure maxima diminished along the sagittal diameter. The intensity of the second shock wave generated near the wall was decreased by approximately 21.2% compared to the initial shock wave. The simulated wave speeds exhibit a high level of concordance with the experimental data, and the calculated errors are below 7.9%. (2) The pressure and velocity at which the shock wave propagates in water exhibit a power function and an exponential decay function, respectively, as they travel across distance. And the perturbation profile of the velocity aligned with the direction in which the shock wave propagated. This result indicates that the shock wave acts as a catalyst for the creation of disturbances in the velocity field. (3) Constructing a transformation relation for the wave energy of near-wall vacuole collapse. During its first collapse, the near-wall cavitation bubble lost an average of 85% of its energy. This allowed for the assessment of the erosive impact of cavitation-induced shock waves on rigid surfaces. |
| format | Article |
| id | doaj-art-d378c725744048a8a1748e190ab38601 |
| institution | Kabale University |
| issn | 1735-3572 1735-3645 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj-art-d378c725744048a8a1748e190ab386012025-01-05T06:26:53ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35721735-36452025-01-0118361763010.47176/jafm.18.3.28982579Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock WavesW. Han0Y. Xian1R. Li2W. Li3Y. Hao4Y. Chen5School of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Qilihe District, Lanzhou, Gansu, 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Qilihe District, Lanzhou, Gansu, 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Qilihe District, Lanzhou, Gansu, 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Qilihe District, Lanzhou, Gansu, 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Qilihe District, Lanzhou, Gansu, 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Qilihe District, Lanzhou, Gansu, 730050, ChinaUnderstanding the kinetic behavior at the scale of a single bubble is crucial for understanding cavitation flow properties. In this study, experiments and numerical analysis of shock waves resulting from the crumpling of a solitary adjacent wall vacuole have been conducted. Shock wave characteristics induced by near-wall bubble collapse were investigated using high-speed photography and shadowgraphy techniques. Numerical simulations were conducted of near-wall vacuole collapse-induced shock-wave dynamics using the OpenFOAM cavitatingFoam solver. (1) The shock wave displays an essentially symmetrical distribution. The pressure maxima diminished along the sagittal diameter. The intensity of the second shock wave generated near the wall was decreased by approximately 21.2% compared to the initial shock wave. The simulated wave speeds exhibit a high level of concordance with the experimental data, and the calculated errors are below 7.9%. (2) The pressure and velocity at which the shock wave propagates in water exhibit a power function and an exponential decay function, respectively, as they travel across distance. And the perturbation profile of the velocity aligned with the direction in which the shock wave propagated. This result indicates that the shock wave acts as a catalyst for the creation of disturbances in the velocity field. (3) Constructing a transformation relation for the wave energy of near-wall vacuole collapse. During its first collapse, the near-wall cavitation bubble lost an average of 85% of its energy. This allowed for the assessment of the erosive impact of cavitation-induced shock waves on rigid surfaces.https://www.jafmonline.net/article_2579_9814ea857dd53288e2365f237dc3a687.pdfcavitation bubblecavitationpressureshockwavewave energyhigh-speed photography high-speed photography |
| spellingShingle | W. Han Y. Xian R. Li W. Li Y. Hao Y. Chen Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock Waves Journal of Applied Fluid Mechanics cavitation bubble cavitation pressure shockwave wave energy high-speed photography high-speed photography |
| title | Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock Waves |
| title_full | Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock Waves |
| title_fullStr | Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock Waves |
| title_full_unstemmed | Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock Waves |
| title_short | Dynamic Characteristics of Near-wall Single Bubble Collapse-induced Shock Waves |
| title_sort | dynamic characteristics of near wall single bubble collapse induced shock waves |
| topic | cavitation bubble cavitation pressure shockwave wave energy high-speed photography high-speed photography |
| url | https://www.jafmonline.net/article_2579_9814ea857dd53288e2365f237dc3a687.pdf |
| work_keys_str_mv | AT whan dynamiccharacteristicsofnearwallsinglebubblecollapseinducedshockwaves AT yxian dynamiccharacteristicsofnearwallsinglebubblecollapseinducedshockwaves AT rli dynamiccharacteristicsofnearwallsinglebubblecollapseinducedshockwaves AT wli dynamiccharacteristicsofnearwallsinglebubblecollapseinducedshockwaves AT yhao dynamiccharacteristicsofnearwallsinglebubblecollapseinducedshockwaves AT ychen dynamiccharacteristicsofnearwallsinglebubblecollapseinducedshockwaves |