Two dimensional simulation for shock wave produced by strong explosion in free air

Yao Cheng-bao; Li Ruo; Tian Zhou; Guo Yong-hui

doi:10.11883/1001-1455(2015)04-0585-06

Volume 35 Issue 4

Jun. 2016

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Yao Cheng-bao, Li Ruo, Tian Zhou, Guo Yong-hui. Two dimensional simulation for shock wave produced by strong explosion in free air[J]. Explosion And Shock Waves, 2015, 35(4): 585-590. doi: 10.11883/1001-1455(2015)04-0585-06

Citation:

Yao Cheng-bao, Li Ruo, Tian Zhou, Guo Yong-hui. Two dimensional simulation for shock wave produced by strong explosion in free air[J]. Explosion And Shock Waves, 2015, 35(4): 585-590. doi: 10.11883/1001-1455(2015)04-0585-06

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Two dimensional simulation for shock wave produced by strong explosion in free air

doi: 10.11883/1001-1455(2015)04-0585-06

Yao Cheng-bao^{1, 2
,},
Li Ruo^{1, 3},
Tian Zhou¹,
Guo Yong-hui¹

1.
School of Mathematical Sciences, Peking University, Beijing 100871, China
2.
Northwest Institute of Nuclear Technology, Xi'an 710024, Shaanxi, China
3.
Center of Applied Physics and Technology, Peking University, Beijing 100871, China

Received Date: 2013-12-04
Rev Recd Date: 2014-07-09
Publish Date: 2015-07-25

Abstract

Abstract

Aimed to simulate the propagation of blast wave with high density ratio and high pressure ratio produced by strong explosion in the air, a two dimensional numerical program is written in which the problem is treated as a two-medium compressible flow with sharp material interface in Eulerian grids. In this method, the finite volume method is used to solve the Euler equations, level set method is used to capture the moving interface, and the numerical flux across the interface is calculated by exactly solving the Riemann problem. Mesh adaption technique in triangle meshes is adopted to refine or coarsen the meshes which can both capture the peak overpressure and improve the computational efficiency. One kiloton nuclear charge of strong explosion in free air is simulated. The shock wave parameters, including peak overpressure, shock arrival time and so on, are in consistence with the point explosion theory, which show the accuracy and efficiency of the numerical methods.
- mechanics of explosion,
- strong explosion in air,
- level set,
- Riemann problem,
- mesh adaption,
- free air,
- shockwave

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References(15)

References

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