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Numerical investigation on detonation control using a pulse hot jet in supersonic combustible mixture

Numerical investigation on detonation control using a pulse hot jet in supersonic combustible mixture
Numerical investigation on detonation control using a pulse hot jet in supersonic combustible mixture
To investigate the mechanism of detonation control using a pulse hot jet in the supersonic hydrogen-oxygen mixture, high-resolution simulations with a detailed reaction model were conducted using an adaptive mesh refinement method. After the successful detonation initiation, a contractive passway was generated between the hot jet and the main flow field behind the detonation front. Due to the contractive passway, the expansion of detonation products was prevented, hence resulting in overdriven detonation. By setting up various contractive passways through adjusting the width of the hot jet, the overdrive degree of overdriven detonation also changes. It is suggested that the width of the hot jet has approximately linear relation with the relative and absolute propagation velocities. When the contractive passway gradually disappeared after the shutdown of the hot jet, overdriven detonation attenuated to the dynamically stable Chapman-Jouguet (CJ) detonation. When the contractive passway was re-established once again after the re-injection of the hot jet, the CJ detonation developed to the same overdriven detonation, indicating that the contractive passway controlled by the pulse hot jet can indeed control detonation propagation in the supersonic combustible mixture to some extent.
0010-2202
1674-1690
Cai, Xiaodong
293bf621-f0e1-48ba-abaa-b41da81ea244
Liang, Jianhan
fd8229b7-c7f4-4a1b-b94f-abce393f9e9a
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Cai, Xiaodong
293bf621-f0e1-48ba-abaa-b41da81ea244
Liang, Jianhan
fd8229b7-c7f4-4a1b-b94f-abce393f9e9a
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314

Cai, Xiaodong, Liang, Jianhan and Deiterding, Ralf (2016) Numerical investigation on detonation control using a pulse hot jet in supersonic combustible mixture. Combustion Science and Technology, 188 (10), 1674-1690. (doi:10.1080/00102202.2016.1193499).

Record type: Article

Abstract

To investigate the mechanism of detonation control using a pulse hot jet in the supersonic hydrogen-oxygen mixture, high-resolution simulations with a detailed reaction model were conducted using an adaptive mesh refinement method. After the successful detonation initiation, a contractive passway was generated between the hot jet and the main flow field behind the detonation front. Due to the contractive passway, the expansion of detonation products was prevented, hence resulting in overdriven detonation. By setting up various contractive passways through adjusting the width of the hot jet, the overdrive degree of overdriven detonation also changes. It is suggested that the width of the hot jet has approximately linear relation with the relative and absolute propagation velocities. When the contractive passway gradually disappeared after the shutdown of the hot jet, overdriven detonation attenuated to the dynamically stable Chapman-Jouguet (CJ) detonation. When the contractive passway was re-established once again after the re-injection of the hot jet, the CJ detonation developed to the same overdriven detonation, indicating that the contractive passway controlled by the pulse hot jet can indeed control detonation propagation in the supersonic combustible mixture to some extent.

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30_06_2016_Numerical .pdf - Accepted Manuscript
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More information

Accepted/In Press date: 20 May 2016
e-pub ahead of print date: 7 June 2016
Published date: 1 October 2016
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 397238
URI: https://eprints.soton.ac.uk/id/eprint/397238
ISSN: 0010-2202
PURE UUID: 9e66d25f-710f-44f9-ad41-3617e4ee1b5d
ORCID for Ralf Deiterding: ORCID iD orcid.org/0000-0003-4776-8183

Catalogue record

Date deposited: 30 Jun 2016 10:43
Last modified: 06 Jun 2018 12:20

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