Simulation of cook-off for AP/HTPB composition propellant in base bleed unit at different heating rates

Li Wenfeng; Yu Yonggang; Ye Rui; Yang Houwen

doi:10.11883/1001-1455(2017)01-0046-07

Volume 37 Issue 1

Jan. 2017

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Li Wenfeng, Yu Yonggang, Ye Rui, Yang Houwen. Simulation of cook-off for AP/HTPB composition propellant in base bleed unit at different heating rates[J]. Explosion And Shock Waves, 2017, 37(1): 46-52. doi: 10.11883/1001-1455(2017)01-0046-07

Citation:

Li Wenfeng, Yu Yonggang, Ye Rui, Yang Houwen. Simulation of cook-off for AP/HTPB composition propellant in base bleed unit at different heating rates[J]. Explosion And Shock Waves, 2017, 37(1): 46-52. doi: 10.11883/1001-1455(2017)01-0046-07

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Simulation of cook-off for AP/HTPB composition propellant in base bleed unit at different heating rates

doi: 10.11883/1001-1455(2017)01-0046-07

School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2015-05-18
Rev Recd Date: 2015-09-17
Publish Date: 2017-01-25

Abstract

Abstract

To investigate the characteristics of the AP/HTPB composition propellant at different heating rates in the slow cook-off, we constructed a a model consisting of two-dimensional unsteady-state heat transfer and two-step chemical reaction kinetics. The characteristics of the composition propellant at the heating rates of 3.3, 4.7 and 6 K/h were analyzed respectively. The results show that the ignition position occurs in the left side of the interface between the propellant and the gas. The heating rate has a great effect on the ignition time and the position for the composition propellant. As the heating rate increases, the ignition delay time decreases and the ignition position moves to the right. The change of the heating rate has limited impact on the ignition delay temperature.
- mechanics of explosion,
- heating rate,
- slow cook-off,
- base bleed,
- AP/HTPB

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References(12)

References

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