Fluid-Structure Interaction Mechanisms for Close-In Explosions
This paper examines fluid-structure interaction for close-in internal and external underwater explosions. The resulting flow field is impacted by the interaction between the reflected explosion shock and the explosion bubble. This shock reflects off the bubble as an expansion that reduces the pressu...
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| Format: | Article |
| Language: | English |
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Wiley
2000-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2000/141934 |
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| _version_ | 1832560462809530368 |
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| author | Andrew B. Wardlaw Jr. J. Alan Luton |
| author_facet | Andrew B. Wardlaw Jr. J. Alan Luton |
| author_sort | Andrew B. Wardlaw Jr. |
| collection | DOAJ |
| description | This paper examines fluid-structure interaction for close-in internal and external underwater explosions. The resulting flow field is impacted by the interaction between the reflected explosion shock and the explosion bubble. This shock reflects off the bubble as an expansion that reduces the pressure level between the bubble and the target, inducing cavitation and its subsequent collapse that reloads the target. Computational examples of several close-in interaction cases are presented to document the occurrence of these mechanisms. By comparing deformable and rigid body simulations, it is shown that cavitation collapse can occur solely from the shock-bubble interaction without the benefit of target deformation. Addition of a deforming target lowers the flow field pressure, facilitates cavitation and cavitation collapse, as well as reducing the impulse of the initial shock loading. |
| format | Article |
| id | doaj-art-07290d94bb504c3b8abb07c657f5c402 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2000-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-07290d94bb504c3b8abb07c657f5c4022025-02-03T01:27:27ZengWileyShock and Vibration1070-96221875-92032000-01-017526527510.1155/2000/141934Fluid-Structure Interaction Mechanisms for Close-In ExplosionsAndrew B. Wardlaw Jr.0J. Alan Luton1Naval Surface Warfare Center, Indian Head Division, Warhead Dynamics Division, Code 420, 101 Strauss Avenue, Indian Head MD 20640-5035, USANaval Surface Warfare Center, Indian Head Division, Warhead Dynamics Division, Code 420, 101 Strauss Avenue, Indian Head MD 20640-5035, USAThis paper examines fluid-structure interaction for close-in internal and external underwater explosions. The resulting flow field is impacted by the interaction between the reflected explosion shock and the explosion bubble. This shock reflects off the bubble as an expansion that reduces the pressure level between the bubble and the target, inducing cavitation and its subsequent collapse that reloads the target. Computational examples of several close-in interaction cases are presented to document the occurrence of these mechanisms. By comparing deformable and rigid body simulations, it is shown that cavitation collapse can occur solely from the shock-bubble interaction without the benefit of target deformation. Addition of a deforming target lowers the flow field pressure, facilitates cavitation and cavitation collapse, as well as reducing the impulse of the initial shock loading.http://dx.doi.org/10.1155/2000/141934 |
| spellingShingle | Andrew B. Wardlaw Jr. J. Alan Luton Fluid-Structure Interaction Mechanisms for Close-In Explosions Shock and Vibration |
| title | Fluid-Structure Interaction Mechanisms for Close-In Explosions |
| title_full | Fluid-Structure Interaction Mechanisms for Close-In Explosions |
| title_fullStr | Fluid-Structure Interaction Mechanisms for Close-In Explosions |
| title_full_unstemmed | Fluid-Structure Interaction Mechanisms for Close-In Explosions |
| title_short | Fluid-Structure Interaction Mechanisms for Close-In Explosions |
| title_sort | fluid structure interaction mechanisms for close in explosions |
| url | http://dx.doi.org/10.1155/2000/141934 |
| work_keys_str_mv | AT andrewbwardlawjr fluidstructureinteractionmechanismsforcloseinexplosions AT jalanluton fluidstructureinteractionmechanismsforcloseinexplosions |