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Effects of transverse jet parameters on flame propagation and detonation transition in hydrogen–oxygen-argon mixture

Effects of transverse jet parameters on flame propagation and detonation transition in hydrogen–oxygen-argon mixture
Effects of transverse jet parameters on flame propagation and detonation transition in hydrogen–oxygen-argon mixture
Two-dimensional numerical simulation is performed with the open-source program AMROC to study the effects of transverse jets (act as fluidic obstacles within a detonation tube) on the flame acceleration and deflagration to detonation transition (DDT). The slot transverse jets have been studied and compared with conventional solid obstacles in tubes. The jet initial parameters, such as mixture composition, stagnation temperature, pressure and mass flow rate, are investigated. The results demonstrate that a hydrogen-oxygen-argon reactive fluidic obstacle leads to the shortest DDT distance and time compared with solid obstacles and fluidic obstacles composed of pure oxygen or argon. The fluidic obstacles can induce more vorticities to accelerate flame propagation. The DDT distance and time decrease with the jet initial temperature, pressure and mass flow rate rise, while a high jet initial stagnation temperature is counterproductive to shorting DDT distance and time. The local static pressure rise plays an important role in flame acceleration when increasing the initial pressure of the fluidic obstacle. Higher jet pressure and a wider jet induce more compression waves, which can make the initial flame front more unstable and accelerate the flame as well.
flame acceleration, DDT, transverse jets, ; fluidic obstacles, flame-vortex interaction
0010-2202
Peng, Han
62906b46-9628-43fc-921d-b6257b1fec6f
Huang, Yue
b61d46a7-90a8-4c1f-bd59-de326fc2eb87
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
You, Yancheng
09fe5931-deb7-4219-9655-697b3c64f303
Luan, Zhenye
8cf68510-8da1-4040-9ebc-820bcc311a4c
Peng, Han
62906b46-9628-43fc-921d-b6257b1fec6f
Huang, Yue
b61d46a7-90a8-4c1f-bd59-de326fc2eb87
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
You, Yancheng
09fe5931-deb7-4219-9655-697b3c64f303
Luan, Zhenye
8cf68510-8da1-4040-9ebc-820bcc311a4c

Peng, Han, Huang, Yue, Deiterding, Ralf, You, Yancheng and Luan, Zhenye (2019) Effects of transverse jet parameters on flame propagation and detonation transition in hydrogen–oxygen-argon mixture. Combustion Science and Technology. (doi:10.1080/00102202.2019.1700236).

Record type: Article

Abstract

Two-dimensional numerical simulation is performed with the open-source program AMROC to study the effects of transverse jets (act as fluidic obstacles within a detonation tube) on the flame acceleration and deflagration to detonation transition (DDT). The slot transverse jets have been studied and compared with conventional solid obstacles in tubes. The jet initial parameters, such as mixture composition, stagnation temperature, pressure and mass flow rate, are investigated. The results demonstrate that a hydrogen-oxygen-argon reactive fluidic obstacle leads to the shortest DDT distance and time compared with solid obstacles and fluidic obstacles composed of pure oxygen or argon. The fluidic obstacles can induce more vorticities to accelerate flame propagation. The DDT distance and time decrease with the jet initial temperature, pressure and mass flow rate rise, while a high jet initial stagnation temperature is counterproductive to shorting DDT distance and time. The local static pressure rise plays an important role in flame acceleration when increasing the initial pressure of the fluidic obstacle. Higher jet pressure and a wider jet induce more compression waves, which can make the initial flame front more unstable and accelerate the flame as well.

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CST_Manuscript-revision_1031_by Han-RD_authorversion - Accepted Manuscript
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More information

Accepted/In Press date: 29 November 2019
e-pub ahead of print date: 5 December 2019
Keywords: flame acceleration, DDT, transverse jets, ; fluidic obstacles, flame-vortex interaction

Identifiers

Local EPrints ID: 436419
URI: http://eprints.soton.ac.uk/id/eprint/436419
ISSN: 0010-2202
PURE UUID: 85b77480-04cc-4c7b-97f5-22fccd3a7c74
ORCID for Han Peng: ORCID iD orcid.org/0000-0003-4503-360X
ORCID for Ralf Deiterding: ORCID iD orcid.org/0000-0003-4776-8183

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Date deposited: 10 Dec 2019 17:30
Last modified: 28 Apr 2022 06:29

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Contributors

Author: Han Peng ORCID iD
Author: Yue Huang
Author: Ralf Deiterding ORCID iD
Author: Yancheng You
Author: Zhenye Luan

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