Numerical study of near-field underwater explosion of cylindrical aluminized explosive by the method of characteristics

LI Xiaojie; YANG Chenchen; YAN Honghao; WANG Xiaohong; WANG Yuxin; ZHANG Chengjiao

doi:10.11883/bzycj-2017-0412

Volume 39 Issue 2

Feb. 2019

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LI Xiaojie, YANG Chenchen, YAN Honghao, WANG Xiaohong, WANG Yuxin, ZHANG Chengjiao. Numerical study of near-field underwater explosion of cylindrical aluminized explosive by the method of characteristics[J]. Explosion And Shock Waves, 2019, 39(2): 022301. doi: 10.11883/bzycj-2017-0412

Citation:

LI Xiaojie, YANG Chenchen, YAN Honghao, WANG Xiaohong, WANG Yuxin, ZHANG Chengjiao. Numerical study of near-field underwater explosion of cylindrical aluminized explosive by the method of characteristics[J]. Explosion And Shock Waves, 2019, 39(2): 022301. doi: 10.11883/bzycj-2017-0412

Citation:

LI Xiaojie, YANG Chenchen, YAN Honghao, WANG Xiaohong, WANG Yuxin, ZHANG Chengjiao. Numerical study of near-field underwater explosion of cylindrical aluminized explosive by the method of characteristics[J]. Explosion And Shock Waves, 2019, 39(2): 022301. doi: 10.11883/bzycj-2017-0412

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Numerical study of near-field underwater explosion of cylindrical aluminized explosive by the method of characteristics

doi: 10.11883/bzycj-2017-0412

State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, Liaoning, China

Received Date: 2017-04-12
Rev Recd Date: 2018-01-31
Publish Date: 2019-02-05

Abstract

Abstract

Based on the previously proposed method of characteristics containing an entropy variate, the non-ideal effect of aluminum combustion is portrayed by controlling the energy release in non-isentropic flow. Combined with a simple Chapman-Jouguet model and a JWL-Miller equation of state, it is obtained the near-field parameters for the underwater explosion of the cylindrical aluminized explosive. Comparing the simulation results with the experimental data, it is found that this method can give a good prediction for the propagation of shock wave and the bubble expansion of detonation products as well as the reflection of internal compression wave. The results show that this method can be applied to the near-field calculation of underwater explosion of aluminum explosive, and even the evaluation of explosive performance or the estimation of underwater energy output.
- aluminized explosive,
- underwater explosion,
- non-isentropic flow,
- method of characteristics

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References(36)

References

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