Numerical simulation of launching process of air gun impact test-bed

XIAO Chenghuan; LU Zhaijun

doi:10.11883/bzycj-2016-0378

Volume 38 Issue 4

May 2018

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XIAO Chenghuan, LU Zhaijun. Numerical simulation of launching process of air gun impact test-bed[J]. Explosion And Shock Waves, 2018, 38(4): 931-936. doi: 10.11883/bzycj-2016-0378

Citation:

XIAO Chenghuan, LU Zhaijun. Numerical simulation of launching process of air gun impact test-bed[J]. Explosion And Shock Waves, 2018, 38(4): 931-936. doi: 10.11883/bzycj-2016-0378

XIAO Chenghuan, LU Zhaijun. Numerical simulation of launching process of air gun impact test-bed[J]. Explosion And Shock Waves, 2018, 38(4): 931-936. doi: 10.11883/bzycj-2016-0378

Citation:

XIAO Chenghuan, LU Zhaijun. Numerical simulation of launching process of air gun impact test-bed[J]. Explosion And Shock Waves, 2018, 38(4): 931-936. doi: 10.11883/bzycj-2016-0378

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Numerical simulation of launching process of air gun impact test-bed

doi: 10.11883/bzycj-2016-0378

XIAO Chenghuan^{1, 2},
LU Zhaijun^{1, 2
,
,}

1.
Key Laboratory of Traffic Safety on Track, Ministry of Education, Central South University, Changsha 410075, Hunan, China
2.
Collaborative Innovation Center of Traffic Safety on Track, Changsha 410075, Hunan, China

Received Date: 2016-12-13
Rev Recd Date: 2017-03-13
Publish Date: 2018-07-25

Abstract

Abstract

We simulated the launching progress of SSAGIT using the computational fluid dynamics (CFD) and the velocity of the impact car obtained from calculation are consistent with the experiment results. Based on this, we investigated the flow field, the pressure in the front and back of the car, and the pressure of the gasholder. The results showed that the launch field was filled with the leakage gas before the arrival of the impact car, causing the development of an initial flow field, and the alternatively positive and negative variations of the pressure in the front of the car, but its influence on the acceleration process was negligible because of its small value. In addition, the acceleration was maintained due to the effect of the jet after the impacted car entered the decompression part, and the increment was about 2 m/s.
- computational fluid dynamics (CFD),
- simulation analysis,
- dynamic mesh,
- air gun

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References(15)

References

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