Influence of liquid fuel on the detonation characteristics of continuous rotating detonation engine

LI Baoxing; WENG Chunsheng

doi:10.11883/bzycj-2016-0240

Volume 38 Issue 2

Jan. 2018

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Article Navigation > Explosion And Shock Waves > 2018 > 38(2): 331-338

LI Baoxing, WENG Chunsheng. Influence of liquid fuel on the detonation characteristics of continuous rotating detonation engine[J]. Explosion And Shock Waves, 2018, 38(2): 331-338. doi: 10.11883/bzycj-2016-0240

Citation:

LI Baoxing, WENG Chunsheng. Influence of liquid fuel on the detonation characteristics of continuous rotating detonation engine[J]. Explosion And Shock Waves, 2018, 38(2): 331-338. doi: 10.11883/bzycj-2016-0240

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Influence of liquid fuel on the detonation characteristics of continuous rotating detonation engine

doi: 10.11883/bzycj-2016-0240

LI Baoxing,
WENG Chunsheng^,

National Key Lab of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2016-08-16
Rev Recd Date: 2016-12-12
Publish Date: 2018-03-25

Abstract

Abstract

In this paper, based on two-dimensional conservation element and solution element(CE/SE), we simulated the detonation process of CRDE with gasoline and oxygen-enriched air to study the influence of liquid fuel on the detonation characteristics of the continuous rotating detonation engine. The effects of different droplet radiuses and equivalence ratios on the detonation parameters were analyzed. Our calculation results show that the velocity of the detonation wave and the peak values of the detonation pressure and temperature decreased with the increase of the droplet radius, and the peak values of the pressure and temperature became unstable during the propagation of the detonation wave. However, the detonation wave were not initiated successfully when the radius rose to 70 μm. The velocity of the detonation wave and the average thrust of CRDE increased with the rising of the equivalence ratio, while the peak values of the detonation pressure, temperature and gas phase's circumferential velocity increased first and then decreased. The peak values of the detonation pressure and temperature reached the maximum when the equivalence ratio was about 1.1, while the maximum of the gas phase's circumferential velocity occurred when the equivalence ratio was about 0.9.The fuel-based specific impulse decreased at the increase of the equivalence ratio.
- filling conditions,
- continuous rotating detonation engine,
- CE/SE,
- specific impulse

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References

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