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Detonation initiation and propagation in nonuniform supersonic combustible mixtures

Detonation initiation and propagation in nonuniform supersonic combustible mixtures
Detonation initiation and propagation in nonuniform supersonic combustible mixtures
Detonation initiation and propagation using a hot jet in nonuniform combustible mixtures was investigated through fine structure simulations. The Mach reflection on the upper wall resulted in the formation of the Mach stem finally near the interface, which was actually a local detonation wave. The continuous collisions of the lower triple-wave point between the lower wall and the upper triple-wave point played an important role in the successful detonation initiation. The dynamic stable structure propagated at the same speed as a whole in the nonuniform supersonic combustible mixtures. After the shutdown of the hot jet, a relatively new dynamic stable structure was formed eventually in the flow field. The hot jet not only could realize the detonation initiation, but also made an impact on the detonation propagation and the formation of the final dynamic stable structure.
adaptive mesh refinement, hot jet, initiation and propagation, nonuniform supersonic combustible mixtures
0010-2202
525-536
Cai, X.
c733b422-c2e4-44f9-a7f1-6ac222f489bc
Liang, J.
96602708-8db0-465d-89ce-ed1e0f9fa499
Lin, Z.
b737d8cb-3642-46d4-8915-7e273b3ecda3
Deiterding, R.
ce02244b-6651-47e3-8325-2c0a0c9c6314
Zhuang, F.
724d305a-f1f3-4a34-b12e-b179a9b1089d
Cai, X.
c733b422-c2e4-44f9-a7f1-6ac222f489bc
Liang, J.
96602708-8db0-465d-89ce-ed1e0f9fa499
Lin, Z.
b737d8cb-3642-46d4-8915-7e273b3ecda3
Deiterding, R.
ce02244b-6651-47e3-8325-2c0a0c9c6314
Zhuang, F.
724d305a-f1f3-4a34-b12e-b179a9b1089d

Cai, X., Liang, J., Lin, Z., Deiterding, R. and Zhuang, F. (2015) Detonation initiation and propagation in nonuniform supersonic combustible mixtures. Combustion Science and Technology, 187 (4), 525-536. (doi:10.1080/00102202.2014.958223).

Record type: Article

Abstract

Detonation initiation and propagation using a hot jet in nonuniform combustible mixtures was investigated through fine structure simulations. The Mach reflection on the upper wall resulted in the formation of the Mach stem finally near the interface, which was actually a local detonation wave. The continuous collisions of the lower triple-wave point between the lower wall and the upper triple-wave point played an important role in the successful detonation initiation. The dynamic stable structure propagated at the same speed as a whole in the nonuniform supersonic combustible mixtures. After the shutdown of the hot jet, a relatively new dynamic stable structure was formed eventually in the flow field. The hot jet not only could realize the detonation initiation, but also made an impact on the detonation propagation and the formation of the final dynamic stable structure.

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More information

Accepted/In Press date: 21 August 2014
e-pub ahead of print date: 27 October 2014
Published date: 2015
Keywords: adaptive mesh refinement, hot jet, initiation and propagation, nonuniform supersonic combustible mixtures
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 380653
URI: https://eprints.soton.ac.uk/id/eprint/380653
ISSN: 0010-2202
PURE UUID: 4c28e925-b0df-4fc8-a9bf-5f867aeb73a3
ORCID for R. Deiterding: ORCID iD orcid.org/0000-0003-4776-8183

Catalogue record

Date deposited: 08 Sep 2015 15:38
Last modified: 06 Jun 2018 12:20

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Contributors

Author: X. Cai
Author: J. Liang
Author: Z. Lin
Author: R. Deiterding ORCID iD
Author: F. Zhuang

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