A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis
A quasi-isentropic study on the process of driving a cylinder with aluminized explosives was carried out to examine the influence of the aluminum (Al) reaction rate on cylinder expansion and the physical parameters of the detonation products. Based on the proposed quasi-isentropic hypothesis and rel...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-11-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914721001380 |
| _version_ | 1828156228079976448 |
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| author | Hong-fu Wang Yan Liu Fan Bai Jun-bo Yan Xu Li Feng-lei Huang |
| author_facet | Hong-fu Wang Yan Liu Fan Bai Jun-bo Yan Xu Li Feng-lei Huang |
| author_sort | Hong-fu Wang |
| collection | DOAJ |
| description | A quasi-isentropic study on the process of driving a cylinder with aluminized explosives was carried out to examine the influence of the aluminum (Al) reaction rate on cylinder expansion and the physical parameters of the detonation products. Based on the proposed quasi-isentropic hypothesis and relevant isentropic theories, the characteristic lines of aluminized explosives driving a cylinder were analyzed, and a quasi-isentropic model was established. This model includes the variation of the cylinder wall velocity and the physical parameters of the detonation products with the Al reaction degree. Using previously reported experimental results, the quasi-isentropic model was verified to be applicative and accurate. This model was used to calculate the physical parameters for cylinder experiments with aluminized cyclotrimethylenetrinitramine explosives with 15.0 % and 30.0 % Al content. The results show that this quasi-isentropic model can be used not only to calculate the cylinder expansion rule or Al reaction degree, but also to calculate the physical parameters of the detonation products in the process of cylinder expansion. For explosives with 15.0 % and 30.0 % Al, 24.3 % and 18.5 % of the Al was found to have reacted at 33.9 μs and 34.0 μs, respectively. The difference in Al content results in different reaction intensity, occurrence time, and duration of two forms of reaction (diffusion and kinetic) between the Al powder and the detonation products; the post-detonation burning reaction between the Al powder and the detonation products prolongs the positive pressure action time, resulting in a continuous rise in temperature after detonation. |
| first_indexed | 2024-04-11T23:07:17Z |
| format | Article |
| id | doaj.art-2eb560a541874597ab4f7920287946a0 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-04-11T23:07:17Z |
| publishDate | 2022-11-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-2eb560a541874597ab4f7920287946a02022-12-22T03:57:57ZengKeAi Communications Co., Ltd.Defence Technology2214-91472022-11-01181119791999A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysisHong-fu Wang0Yan Liu1Fan Bai2Jun-bo Yan3Xu Li4Feng-lei Huang5State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China; Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, China; Corresponding author. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaA quasi-isentropic study on the process of driving a cylinder with aluminized explosives was carried out to examine the influence of the aluminum (Al) reaction rate on cylinder expansion and the physical parameters of the detonation products. Based on the proposed quasi-isentropic hypothesis and relevant isentropic theories, the characteristic lines of aluminized explosives driving a cylinder were analyzed, and a quasi-isentropic model was established. This model includes the variation of the cylinder wall velocity and the physical parameters of the detonation products with the Al reaction degree. Using previously reported experimental results, the quasi-isentropic model was verified to be applicative and accurate. This model was used to calculate the physical parameters for cylinder experiments with aluminized cyclotrimethylenetrinitramine explosives with 15.0 % and 30.0 % Al content. The results show that this quasi-isentropic model can be used not only to calculate the cylinder expansion rule or Al reaction degree, but also to calculate the physical parameters of the detonation products in the process of cylinder expansion. For explosives with 15.0 % and 30.0 % Al, 24.3 % and 18.5 % of the Al was found to have reacted at 33.9 μs and 34.0 μs, respectively. The difference in Al content results in different reaction intensity, occurrence time, and duration of two forms of reaction (diffusion and kinetic) between the Al powder and the detonation products; the post-detonation burning reaction between the Al powder and the detonation products prolongs the positive pressure action time, resulting in a continuous rise in temperature after detonation.http://www.sciencedirect.com/science/article/pii/S2214914721001380Aluminized explosivesCylinder experimentsQuasi-isentropic modelCharacteristic line analysisReaction degree of Al powderPhysical parameters of detonation products |
| spellingShingle | Hong-fu Wang Yan Liu Fan Bai Jun-bo Yan Xu Li Feng-lei Huang A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis Defence Technology Aluminized explosives Cylinder experiments Quasi-isentropic model Characteristic line analysis Reaction degree of Al powder Physical parameters of detonation products |
| title | A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis |
| title_full | A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis |
| title_fullStr | A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis |
| title_full_unstemmed | A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis |
| title_short | A quasi-isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis |
| title_sort | quasi isentropic model of a cylinder driven by aluminized explosives based on characteristic line analysis |
| topic | Aluminized explosives Cylinder experiments Quasi-isentropic model Characteristic line analysis Reaction degree of Al powder Physical parameters of detonation products |
| url | http://www.sciencedirect.com/science/article/pii/S2214914721001380 |
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