Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth
Pressure hulls play an important role in deep-sea underwater vehicles. However, in the ultra-high pressure environment, a highly destructive phenomenon could occur to them which is called implosion. To study the characteristics of the flow field of the underwater implosion of hollow ceramic pressure...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Ocean Engineering and Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468013322000110 |
| _version_ | 1811157899009851392 |
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| author | Shengxia Sun Fenghua Chen Min Zhao |
| author_facet | Shengxia Sun Fenghua Chen Min Zhao |
| author_sort | Shengxia Sun |
| collection | DOAJ |
| description | Pressure hulls play an important role in deep-sea underwater vehicles. However, in the ultra-high pressure environment, a highly destructive phenomenon could occur to them which is called implosion. To study the characteristics of the flow field of the underwater implosion of hollow ceramic pressure hulls, the compressible multiphase flow theory, direct numerical simulation, and adaptive mesh refinement are used to numerically simulate the underwater implosion of a single ceramic pressure hull and multiple linearly arranged ceramic pressure hulls. Firstly, the feasibility of the numerical simulation method is verified. Then, the results of the flow field of the underwater implosion of hollow ceramic pressure hulls in 11000 m depth is analyzed. There are the compression-rebound processes of the internal air cavity in the implosion. In the rebound stage, a shock wave that is several times the ambient pressure is generated outside the pressure hull, and the propagation speed is close to the speed of sound. The pressure peak of the shock wave has a negative exponential power function relationship with the distance to the center of the sphere. Finally, it is found that the obvious superimposed effect between spheres exists in the chain-reaction implosion which enhances the implosion shock wave. |
| first_indexed | 2024-04-10T05:15:18Z |
| format | Article |
| id | doaj.art-ca1edb74860e468693f1f16abcffc582 |
| institution | Directory Open Access Journal |
| issn | 2468-0133 |
| language | English |
| last_indexed | 2024-04-10T05:15:18Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Ocean Engineering and Science |
| spelling | doaj.art-ca1edb74860e468693f1f16abcffc5822023-03-09T04:13:37ZengElsevierJournal of Ocean Engineering and Science2468-01332023-03-0182181195Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depthShengxia Sun0Fenghua Chen1Min Zhao2State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, ChinaState Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, ChinaCorresponding author.; State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, ChinaPressure hulls play an important role in deep-sea underwater vehicles. However, in the ultra-high pressure environment, a highly destructive phenomenon could occur to them which is called implosion. To study the characteristics of the flow field of the underwater implosion of hollow ceramic pressure hulls, the compressible multiphase flow theory, direct numerical simulation, and adaptive mesh refinement are used to numerically simulate the underwater implosion of a single ceramic pressure hull and multiple linearly arranged ceramic pressure hulls. Firstly, the feasibility of the numerical simulation method is verified. Then, the results of the flow field of the underwater implosion of hollow ceramic pressure hulls in 11000 m depth is analyzed. There are the compression-rebound processes of the internal air cavity in the implosion. In the rebound stage, a shock wave that is several times the ambient pressure is generated outside the pressure hull, and the propagation speed is close to the speed of sound. The pressure peak of the shock wave has a negative exponential power function relationship with the distance to the center of the sphere. Finally, it is found that the obvious superimposed effect between spheres exists in the chain-reaction implosion which enhances the implosion shock wave.http://www.sciencedirect.com/science/article/pii/S2468013322000110Underwater implosion11000 m depthHollow ceramic pressure hullCompressible multiphase flowAdaptive mesh refinementChain-reaction implosion |
| spellingShingle | Shengxia Sun Fenghua Chen Min Zhao Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth Journal of Ocean Engineering and Science Underwater implosion 11000 m depth Hollow ceramic pressure hull Compressible multiphase flow Adaptive mesh refinement Chain-reaction implosion |
| title | Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth |
| title_full | Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth |
| title_fullStr | Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth |
| title_full_unstemmed | Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth |
| title_short | Numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth |
| title_sort | numerical simulation and analysis of the underwater implosion of spherical hollow ceramic pressure hulls in 11000 m depth |
| topic | Underwater implosion 11000 m depth Hollow ceramic pressure hull Compressible multiphase flow Adaptive mesh refinement Chain-reaction implosion |
| url | http://www.sciencedirect.com/science/article/pii/S2468013322000110 |
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