ZHANG Ya, LI Xiaobin, PENG Shuai, SHI Rui. Influences of adiabatic index γ on the parameters of different complex wave zones in a planar detonation[J]. Explosion And Shock Waves, 2021, 41(10): 102102. doi: 10.11883/bzycj-2020-0458
Citation:
ZHANG Ya, LI Xiaobin, PENG Shuai, SHI Rui. Influences of adiabatic index γ on the parameters of different complex wave zones in a planar detonation[J]. Explosion And Shock Waves, 2021, 41(10): 102102. doi: 10.11883/bzycj-2020-0458
ZHANG Ya, LI Xiaobin, PENG Shuai, SHI Rui. Influences of adiabatic index γ on the parameters of different complex wave zones in a planar detonation[J]. Explosion And Shock Waves, 2021, 41(10): 102102. doi: 10.11883/bzycj-2020-0458
Citation:
ZHANG Ya, LI Xiaobin, PENG Shuai, SHI Rui. Influences of adiabatic index γ on the parameters of different complex wave zones in a planar detonation[J]. Explosion And Shock Waves, 2021, 41(10): 102102. doi: 10.11883/bzycj-2020-0458
A variety of complex wave zones are formed during the impact and expansion of explosive gas products. When the adiabatic index γ of explosive gas is different, the attenuation characteristics of the wave zones are quite different. In order to understand the characteristics of the complex wave zone under the different γ conditions (γ＞3, γ=3, γ＜3), the intersection characteristics of different complex wave zones in a planar detonation were analyzed based on the characteristic line method. The flow field in the planar detonation was simulated by MATLAB to verify and analyze the parameter change characteristics of the flow fields in the different complex wave zones. Comparisons display that the differences in the attenuation characteristics of the wave zones are mainly reflected in the differences in the u-c plane characteristics related to the particle velocity and the gas sound velocity. Among them, in the complex wave zone where two rarefaction waves intersect, the difference is also reflected in that when γ≠3, the rarefaction wave no longer has the characteristic of central divergence. The analysis result on the characteristics of each wave zone in the explosion process provides a reference for comprehensively understanding the attenuation of each characteristic parameter.
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