Numerical study of cavitator angle effect on ventilated supercavitating flow
ABSTRACTDespite decades of rigorous research into supercavitating flow, there is still a lack of in-depth knowledge on the properties of ventilated supercavitation with cavitators of varying angle of attack. To address this gap, this study aimed to investigate numerically the supercavity profile, in...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | Engineering Applications of Computational Fluid Mechanics |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19942060.2023.2215297 |
| _version_ | 1827595008893517824 |
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| author | Van-Duyen Pham Byoung-Kwon Ahn Cheolsoo Park Gun-Do Kim Il-Sung Moon |
| author_facet | Van-Duyen Pham Byoung-Kwon Ahn Cheolsoo Park Gun-Do Kim Il-Sung Moon |
| author_sort | Van-Duyen Pham |
| collection | DOAJ |
| description | ABSTRACTDespite decades of rigorous research into supercavitating flow, there is still a lack of in-depth knowledge on the properties of ventilated supercavitation with cavitators of varying angle of attack. To address this gap, this study aimed to investigate numerically the supercavity profile, internal pressure behavior, and gas leakage mechanism taking into account the effects of cavitator angle of attack. The study examined five different types of cavitator: 45°, 60°, 90°, 135° cone-shaped and disk-shaped cavitators, all with the same diameter, and evaluated them at seven attack angles (−15°, −10°, −5°, 0°, +5°, +10°, +15°). The results show that, although the maximum diameter of the supercavity remained mostly stable, changes in the cavitator’s angle of attack had a considerable effect on the length and deformation of the supercavity profile. The gas leakage mechanism typically exhibited twin-vortex and quad-vortex tubes. As the cavitator angle of attack increased, the height and distance of these tubes changed significantly, but the pressure distribution inside the cavity remained stable. The findings of this study provide useful information for minimizing supercavity deformation, which can reduce the planning effects resulting from surface–fluid interaction and ultimately enhance the stability and manoeuverability of supercavitating objects. |
| first_indexed | 2024-03-09T02:46:30Z |
| format | Article |
| id | doaj.art-a6d3d27f85384d8aa341a882fb8ca4e0 |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-03-09T02:46:30Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-a6d3d27f85384d8aa341a882fb8ca4e02023-12-05T16:53:44ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2023-12-0117110.1080/19942060.2023.2215297Numerical study of cavitator angle effect on ventilated supercavitating flowVan-Duyen Pham0Byoung-Kwon Ahn1Cheolsoo Park2Gun-Do Kim3Il-Sung Moon4Department of Naval Architecture and Ocean Engineering, Chungnam National University, Daejeon, South KoreaDepartment of Naval Architecture and Ocean Engineering, Chungnam National University, Daejeon, South KoreaKorea Research Institute of Ships and Ocean Engineering, Daejeon, South KoreaKorea Research Institute of Ships and Ocean Engineering, Daejeon, South KoreaKorea Research Institute of Ships and Ocean Engineering, Daejeon, South KoreaABSTRACTDespite decades of rigorous research into supercavitating flow, there is still a lack of in-depth knowledge on the properties of ventilated supercavitation with cavitators of varying angle of attack. To address this gap, this study aimed to investigate numerically the supercavity profile, internal pressure behavior, and gas leakage mechanism taking into account the effects of cavitator angle of attack. The study examined five different types of cavitator: 45°, 60°, 90°, 135° cone-shaped and disk-shaped cavitators, all with the same diameter, and evaluated them at seven attack angles (−15°, −10°, −5°, 0°, +5°, +10°, +15°). The results show that, although the maximum diameter of the supercavity remained mostly stable, changes in the cavitator’s angle of attack had a considerable effect on the length and deformation of the supercavity profile. The gas leakage mechanism typically exhibited twin-vortex and quad-vortex tubes. As the cavitator angle of attack increased, the height and distance of these tubes changed significantly, but the pressure distribution inside the cavity remained stable. The findings of this study provide useful information for minimizing supercavity deformation, which can reduce the planning effects resulting from surface–fluid interaction and ultimately enhance the stability and manoeuverability of supercavitating objects.https://www.tandfonline.com/doi/10.1080/19942060.2023.2215297Supercavitationventilationsupercavity formationangle of attack |
| spellingShingle | Van-Duyen Pham Byoung-Kwon Ahn Cheolsoo Park Gun-Do Kim Il-Sung Moon Numerical study of cavitator angle effect on ventilated supercavitating flow Engineering Applications of Computational Fluid Mechanics Supercavitation ventilation supercavity formation angle of attack |
| title | Numerical study of cavitator angle effect on ventilated supercavitating flow |
| title_full | Numerical study of cavitator angle effect on ventilated supercavitating flow |
| title_fullStr | Numerical study of cavitator angle effect on ventilated supercavitating flow |
| title_full_unstemmed | Numerical study of cavitator angle effect on ventilated supercavitating flow |
| title_short | Numerical study of cavitator angle effect on ventilated supercavitating flow |
| title_sort | numerical study of cavitator angle effect on ventilated supercavitating flow |
| topic | Supercavitation ventilation supercavity formation angle of attack |
| url | https://www.tandfonline.com/doi/10.1080/19942060.2023.2215297 |
| work_keys_str_mv | AT vanduyenpham numericalstudyofcavitatorangleeffectonventilatedsupercavitatingflow AT byoungkwonahn numericalstudyofcavitatorangleeffectonventilatedsupercavitatingflow AT cheolsoopark numericalstudyofcavitatorangleeffectonventilatedsupercavitatingflow AT gundokim numericalstudyofcavitatorangleeffectonventilatedsupercavitatingflow AT ilsungmoon numericalstudyofcavitatorangleeffectonventilatedsupercavitatingflow |