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A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration

Zhaoxin Ren Orcid Logo, Wang Bing

Advances in Mechanical Engineering, Volume: 6, Start page: 836146

Swansea University Author: Zhaoxin Ren Orcid Logo

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DOI (Published version): 10.1155/2014/836146

Abstract

Under the background of dual combustor ramjet (DCR), a numerical investigation of supersonic mixing layer was launched, focused on the mixing enhancement method of applying baffles with different geometric configurations. Large eddy simulation with high order schemes, containing a fifth-order hybrid...

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Published in: Advances in Mechanical Engineering
ISSN: 1687-8140 1687-8140
Published: SAGE Publications 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa59362
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spelling 2022-02-23T15:46:17.1551622 v2 59362 2022-02-11 A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration 62a1a0da0fa78e05c3deafcdee5551ce 0000-0002-6305-9515 Zhaoxin Ren Zhaoxin Ren true false 2022-02-11 AERO Under the background of dual combustor ramjet (DCR), a numerical investigation of supersonic mixing layer was launched, focused on the mixing enhancement method of applying baffles with different geometric configurations. Large eddy simulation with high order schemes, containing a fifth-order hybrid WENO compact scheme for the convective flux and sixth-order compact one for the viscous flux, was utilized to numerically study the development of the supersonic mixing layer. The supersonic cavity flow was simulated and the cavity configuration could influence the mixing characteristics, since the impingement process of large scale structures formed inside the cavity could raise the vorticity and promote the mixing. The effect of baffle's configurations on the mixing process was analyzed by comparing the flow properties, mixing efficiency, and total pressure loss. The baffle could induce large scale vortexes, promote the mixing layer to lose its stability easily, and then lead to the mixing efficiency enhancement. However, the baffle could increase the total pressure loss. The present investigation could provide guidance for applying new passive mixing enhancement methods for the supersonic mixing. Journal Article Advances in Mechanical Engineering 6 836146 SAGE Publications 1687-8140 1687-8140 1 1 2014 2014-01-01 10.1155/2014/836146 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University The research work is partially supported by “The Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions”. 2022-02-23T15:46:17.1551622 2022-02-11T01:09:44.8607051 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Zhaoxin Ren 0000-0002-6305-9515 1 Wang Bing 2 59362__22446__4e385ce03db342fcac51fc27ce6bca15.pdf 59362.pdf 2022-02-23T15:45:20.1364626 Output 2722169 application/pdf Version of Record true Copyright © 2014 R. Zhao-Xin and W. Bing. This is an open access article distributed under the Creative Commons Attribution License true eng http://creativecommons.org/licenses/by/3.0/
title A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
spellingShingle A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
Zhaoxin Ren
title_short A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
title_full A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
title_fullStr A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
title_full_unstemmed A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
title_sort A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
author_id_str_mv 62a1a0da0fa78e05c3deafcdee5551ce
author_id_fullname_str_mv 62a1a0da0fa78e05c3deafcdee5551ce_***_Zhaoxin Ren
author Zhaoxin Ren
author2 Zhaoxin Ren
Wang Bing
format Journal article
container_title Advances in Mechanical Engineering
container_volume 6
container_start_page 836146
publishDate 2014
institution Swansea University
issn 1687-8140
1687-8140
doi_str_mv 10.1155/2014/836146
publisher SAGE Publications
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
document_store_str 1
active_str 0
description Under the background of dual combustor ramjet (DCR), a numerical investigation of supersonic mixing layer was launched, focused on the mixing enhancement method of applying baffles with different geometric configurations. Large eddy simulation with high order schemes, containing a fifth-order hybrid WENO compact scheme for the convective flux and sixth-order compact one for the viscous flux, was utilized to numerically study the development of the supersonic mixing layer. The supersonic cavity flow was simulated and the cavity configuration could influence the mixing characteristics, since the impingement process of large scale structures formed inside the cavity could raise the vorticity and promote the mixing. The effect of baffle's configurations on the mixing process was analyzed by comparing the flow properties, mixing efficiency, and total pressure loss. The baffle could induce large scale vortexes, promote the mixing layer to lose its stability easily, and then lead to the mixing efficiency enhancement. However, the baffle could increase the total pressure loss. The present investigation could provide guidance for applying new passive mixing enhancement methods for the supersonic mixing.
published_date 2014-01-01T04:16:37Z
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score 11.012678

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