Numerical simulation for aluminum/air two-dimensional viscous two-phase detonation

Wei Wei; Weng Chun-sheng

doi:10.11883/1001-1455(2015)01-0029-07

Volume 35 Issue 1

Feb. 2015

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Wei Wei, Weng Chun-sheng. Numerical simulation for aluminum/air two-dimensional viscous two-phase detonation[J]. Explosion And Shock Waves, 2015, 35(1): 29-35. doi: 10.11883/1001-1455(2015)01-0029-07

Citation:

Wei Wei, Weng Chun-sheng. Numerical simulation for aluminum/air two-dimensional viscous two-phase detonation[J]. Explosion And Shock Waves, 2015, 35(1): 29-35. doi: 10.11883/1001-1455(2015)01-0029-07

Wei Wei, Weng Chun-sheng. Numerical simulation for aluminum/air two-dimensional viscous two-phase detonation[J]. Explosion And Shock Waves, 2015, 35(1): 29-35. doi: 10.11883/1001-1455(2015)01-0029-07

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Numerical simulation for aluminum/air two-dimensional viscous two-phase detonation

doi: 10.11883/1001-1455(2015)01-0029-07

Wei Wei^{1, 2},
Weng Chun-sheng^1
,

1.
National Key Laboratory of Transient Physics, Nanjing University of Scienceand Technology, Nanjing 210094, Jiangsu, China
2.
Jiangsu Maritime Institute, Nanjing 211170, Jiangsu, China

Received Date: 2013-05-10
Rev Recd Date: 2013-09-13
Publish Date: 2015-01-25

Abstract

Abstract

A two-dimensional mathematical model of viscous aluminum/air two-phase detonation is established. The flow field inside the detonation tube was calculated by the method of conservation element and solution element. And the distribution of physical parameters is analyzed. Numerical results show that in the early stages of the deflagration-to-detonation transition process in the tube, pressure change obviously along the radius and significant reflection wave is collided off the wall. In the later period, pressure along the axis changes obviously, but the radial effect still can't be ignored. The reflection wave from the collision is important on the formation of steady detonation wave. Numerical results also show that the initial radius of the aluminum powder particles have certain influence on the formation and propagation of detonation wave. And certain influence of gas viscosity on flow field near the wall in the detonation tube was exerted. The results of the study can be utilized to reveal the mechanism of the deflagration-to-detonation transitim.
- mechanics of explosion,
- two phase flow,
- CE/SE method,
- aluminum dust,
- detonation

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References(14)

References

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