Combustion Intensification Mechanism in a Vortex-Tube Reactive Flow
文献类型：期刊论文
| 作者 | Ren, Shoujun1,3; Jones, William P. P.1; Wang, Xiaohan3; Tian, Bo2 |
| 刊名 | AIAA JOURNAL
 |
| 出版日期 | 2023-07-19 |
| 页码 | 11 |
| 关键词 | Computational Fluid Dynamics Vortex-flame interaction |
| ISSN号 | 0001-1452 |
| DOI | 10.2514/1.J062791 |
| 通讯作者 | Ren, Shoujun(sren.combust@gmail.com) |
| 英文摘要 | The combustion intensification mechanism was revealed in a stratified vortex-tube combustor. The results show that a triple-flame structure is formed in this combustor and the peak heat release is located exactly at the triple-point position. The peak heat release rates in the five selected representative cases studied in this paper are all over 1.2 x 10(9) W/m(3). The stability limit is wide, and the lean stability limit is always lower than 0.2. The decreased mixing length and decreased velocity difference between the fuel and oxidant streams delay the mixing process and then bring about a stratified distribution of species. This is crucial for the generation of a triple-flame structure and the corresponding high species concentration in the vicinity of the reaction zone under lean conditions. The Damkohler numbers on the lines across the triple points were calculated with values above 1.0 in each of the cases, indicating that the species' transport time is longer than the chemical reaction time. Therefore, the transport flux of species determines the final combustion strength. The synergistic coupling of the flowfield and species field gives rise to a large transport flux of the key species in the vicinity of the reaction zone. The results show that the corresponding fuel transport flux is large, with values all over 0.52 mole/(m(2) center dot s). This is the principal reason for the high combustion intensity in this combustor. The different transport fluxes of the critical species are responsible for the different chemical reaction strengths on the triple point in each of the different cases. |
| WOS关键词 | LARGE-EDDY SIMULATION ; FLAME ; STABILIZATION |
| 资助项目 | postdoctoral program of the International Training Program for Outstanding Young Scientific Research Talents of the Guangdong Province of China ; Engineering and Physical Sciences Research Council through the U.K. Consortium on Turbulent Reactive Flow[EP/K025163/1] ; ARCHER U.K. National Supercomputing Service |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001047760200001 |
| 出版者 | AMER INST AERONAUTICS ASTRONAUTICS |
| 资助机构 | postdoctoral program of the International Training Program for Outstanding Young Scientific Research Talents of the Guangdong Province of China ; Engineering and Physical Sciences Research Council through the U.K. Consortium on Turbulent Reactive Flow ; ARCHER U.K. National Supercomputing Service |
| 源URL | [http://ir.giec.ac.cn/handle/344007/39680]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Ren, Shoujun |
| 作者单位 | 1.Imperial Coll London, Dept Mech Engn, Exhibit Rd, London SW7 2AZ, England 2.Univ Leicester, Dept Engn, Univ Rd, Leicester LE1 7RH, England 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Shoujun,Jones, William P. P.,Wang, Xiaohan,et al. Combustion Intensification Mechanism in a Vortex-Tube Reactive Flow[J]. AIAA JOURNAL,2023:11. |
| APA | Ren, Shoujun,Jones, William P. P.,Wang, Xiaohan,&Tian, Bo.(2023).Combustion Intensification Mechanism in a Vortex-Tube Reactive Flow.AIAA JOURNAL,11. |
| MLA | Ren, Shoujun,et al."Combustion Intensification Mechanism in a Vortex-Tube Reactive Flow".AIAA JOURNAL (2023):11. |
入库方式： OAI收割
来源：广州能源研究所
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