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A LES Study on Passive Mixing in Supersonic Shear Layer Flows Considering Effects of Baffle Configuration
,
Wang Bing
Advances in Mechanical Engineering, Volume: 6, Start page: 836146
Swansea University Author:
Zhaoxin Ren
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Copyright © 2014 R. Zhao-Xin and W. Bing. This is an open access article distributed under the Creative Commons Attribution License
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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...
| Published in: | Advances in Mechanical Engineering |
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| ISSN: | 1687-8140 1687-8140 |
| Published: |
SAGE Publications
2014
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa59362 |
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| 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 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. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
The research work is partially supported by “The Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions”. |
| Start Page: |
836146 |