Propagation characteristics of blast wave in diminished ambient temperature and pressure environments

LI Rui; LI Xiaochen; WANG Quan; YUAN Yuhong; HONG Xiaowen; HUANG Yinsheng

doi:10.11883/bzycj-2022-0188

Volume 43 Issue 2

Feb. 2023

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LI Rui, LI Xiaochen, WANG Quan, YUAN Yuhong, HONG Xiaowen, HUANG Yinsheng. Propagation characteristics of blast wave in diminished ambient temperature and pressure environments[J]. Explosion And Shock Waves, 2023, 43(2): 022301. doi: 10.11883/bzycj-2022-0188

Citation:

LI Rui, LI Xiaochen, WANG Quan, YUAN Yuhong, HONG Xiaowen, HUANG Yinsheng. Propagation characteristics of blast wave in diminished ambient temperature and pressure environments[J]. Explosion And Shock Waves, 2023, 43(2): 022301. doi: 10.11883/bzycj-2022-0188

Citation:

LI Rui, LI Xiaochen, WANG Quan, YUAN Yuhong, HONG Xiaowen, HUANG Yinsheng. Propagation characteristics of blast wave in diminished ambient temperature and pressure environments[J]. Explosion And Shock Waves, 2023, 43(2): 022301. doi: 10.11883/bzycj-2022-0188

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Propagation characteristics of blast wave in diminished ambient temperature and pressure environments

doi: 10.11883/bzycj-2022-0188

1.
Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan 232001, Anhui, China
2.
School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China
3.
School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
4.
Inner Mongolia Metal Material Research Institute, Yantai 264003, Shandong, China

Received Date: 2022-05-01
Rev Recd Date: 2022-06-30

Available Online: 2022-08-07

Publish Date: 2023-02-25

Abstract

Abstract

The effects of different diminished ambient pressure, temperature and altitude from sea level on blast wave parameters (overpressure, impulse and wave front trajectory) were investigated by employing the dimensional analysis theory and the AUTODYN software. Meanwhile, the relationship equations between the blast wave parameters with the diminished pressure and temperature were established, which were verified by numerical simulations and experimental data. Results indicate that the equations can evaluate the blast wave parameters at diminished temperature and pressure effectively. It is noted that the blast wave overpressure and far-field (scaled distance Z>0.2 m/kg^1/3) impulse decrease, but the propagation velocity increases, as the ambient pressure decreases. The blast wave impulse increases, and the propagation velocity decreases, but has little effect on the overpressure, as the ambient temperature decreases. It is shown that when the altitude increases by 1000 m in the range from 0 to 9000 m above sea level, the overpressure and far-field impulse of the blast wave decrease in average by about 3.9% and 3.2%. In addition, the blast wave propagation velocity in the near field increases, but it in the farfield decreases with the altitude increase. The influences of the diminished pressure on the blast wave overpressure and impulse are greater than those of the diminished temperature at high altitudes. The blast wave propagation velocity depends on the diminished pressure in the near field, but on the diminished temperature in the far field.
- blast wave,
- high altitude,
- diminished temperature,
- diminished pressure,
- propagation characteristics

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References(24)

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