Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma
A multi-channel gliding arc (MCGA) plasma with an average power of 6000 W is utilized to control the flame flashback in a dual-mode scramjet combustor with a cavity flameholder. Optical measurements, including synchronous high-speed CH* emissions and high-speed schlieren, simultaneous high-speed cam...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Applications in Energy and Combustion Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666352X23000328 |
| _version_ | 1827923794832916480 |
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| author | Rong Feng Jiajian Zhu Dongze Li Zhipeng Meng Mingbo Sun Hongbo Wang Chenglong Wang Chao Wang Zhenguo Wang |
| author_facet | Rong Feng Jiajian Zhu Dongze Li Zhipeng Meng Mingbo Sun Hongbo Wang Chenglong Wang Chao Wang Zhenguo Wang |
| author_sort | Rong Feng |
| collection | DOAJ |
| description | A multi-channel gliding arc (MCGA) plasma with an average power of 6000 W is utilized to control the flame flashback in a dual-mode scramjet combustor with a cavity flameholder. Optical measurements, including synchronous high-speed CH* emissions and high-speed schlieren, simultaneous high-speed camera with the oblique view and high-speed CH* emission, accompanied by the three-dimensional RANS simulation, were employed to characterize the flame flashback with or without the MCGA plasma. The results show that a typical flame flashback cycle can be observed with a period of ∼2 ms in the combustor. The back pressure reduced by the dynamic heat release of the reaction zone is not sufficient to form the steady thermal choking in the mainstream in the absence of the MCGA, which results in the oblique shocks and bow shocks appearing in dual-mode scramjet combustion. When the plasma is added, the flame is strengthened near the plasma region, and the combustion oscillation is suppressed significantly. The re-ignition and attachment characteristics of the MCGA plasma provide the new flame kernels to the mainstream flame, and the leading edge of the mainstream flame follows the MCGA plasma. Due to the relatively stable heat release near the fuel jet assisted by the plasma, the thermal choking is stable presented in the combustor with bow shocks by higher back pressure, indicating that the combustion oscillation is suppressed by the MCGA plasma in the dual-mode scramjet combustor. |
| first_indexed | 2024-03-13T05:01:14Z |
| format | Article |
| id | doaj.art-e66333f8aa814943a00480c47b4cb94f |
| institution | Directory Open Access Journal |
| issn | 2666-352X |
| language | English |
| last_indexed | 2024-03-13T05:01:14Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applications in Energy and Combustion Science |
| spelling | doaj.art-e66333f8aa814943a00480c47b4cb94f2023-06-17T05:21:07ZengElsevierApplications in Energy and Combustion Science2666-352X2023-06-0114100143Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasmaRong Feng0Jiajian Zhu1Dongze Li2Zhipeng Meng3Mingbo Sun4Hongbo Wang5Chenglong Wang6Chao Wang7Zhenguo Wang8National Innovation Institute of Defense Technology, Academy Military Sciences, Beijing 100071, China; Science and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Hunan 410073, ChinaScience and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Hunan 410073, China; Corresponding author.National Innovation Institute of Defense Technology, Academy Military Sciences, Beijing 100071, ChinaNational Innovation Institute of Defense Technology, Academy Military Sciences, Beijing 100071, China; Corresponding author.Science and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Hunan 410073, ChinaScience and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Hunan 410073, ChinaScience and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Hunan 410073, ChinaScience and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Hunan 410073, ChinaScience and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Hunan 410073, ChinaA multi-channel gliding arc (MCGA) plasma with an average power of 6000 W is utilized to control the flame flashback in a dual-mode scramjet combustor with a cavity flameholder. Optical measurements, including synchronous high-speed CH* emissions and high-speed schlieren, simultaneous high-speed camera with the oblique view and high-speed CH* emission, accompanied by the three-dimensional RANS simulation, were employed to characterize the flame flashback with or without the MCGA plasma. The results show that a typical flame flashback cycle can be observed with a period of ∼2 ms in the combustor. The back pressure reduced by the dynamic heat release of the reaction zone is not sufficient to form the steady thermal choking in the mainstream in the absence of the MCGA, which results in the oblique shocks and bow shocks appearing in dual-mode scramjet combustion. When the plasma is added, the flame is strengthened near the plasma region, and the combustion oscillation is suppressed significantly. The re-ignition and attachment characteristics of the MCGA plasma provide the new flame kernels to the mainstream flame, and the leading edge of the mainstream flame follows the MCGA plasma. Due to the relatively stable heat release near the fuel jet assisted by the plasma, the thermal choking is stable presented in the combustor with bow shocks by higher back pressure, indicating that the combustion oscillation is suppressed by the MCGA plasma in the dual-mode scramjet combustor.http://www.sciencedirect.com/science/article/pii/S2666352X23000328Dual-mode scramjet combustionGliding arc dischargePlasma-assisted combustionFlame flashback |
| spellingShingle | Rong Feng Jiajian Zhu Dongze Li Zhipeng Meng Mingbo Sun Hongbo Wang Chenglong Wang Chao Wang Zhenguo Wang Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma Applications in Energy and Combustion Science Dual-mode scramjet combustion Gliding arc discharge Plasma-assisted combustion Flame flashback |
| title | Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma |
| title_full | Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma |
| title_fullStr | Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma |
| title_full_unstemmed | Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma |
| title_short | Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma |
| title_sort | characteristics of the flame flashback in a dual mode scramjet combustor by the gliding arc plasma |
| topic | Dual-mode scramjet combustion Gliding arc discharge Plasma-assisted combustion Flame flashback |
| url | http://www.sciencedirect.com/science/article/pii/S2666352X23000328 |
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