Influence of Hydrodynamics on Soot Process in Laminar Jet Diffusion Flame
文献类型：期刊论文
| 作者 | Liu K(刘琨)1,3; Zhu F(朱凤)3; Wang SF(王双峰)2,3; Wang XZ(王秀珍)2,3; Jiang, Jieyu1 |
| 刊名 | MICROGRAVITY SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2025-07-25 |
| 卷号 | 37期号:4页码:11 |
| 关键词 | Soot Smoke point Hydrodynamics Jet velocity Co-flow |
| ISSN号 | 0938-0108 |
| DOI | 10.1007/s12217-025-10196-2 |
| 通讯作者 | Zhu, Feng(zhufeng@imech.ac.cn) ; Wang, Shuangfeng(sfwang@imech.ac.cn) |
| 英文摘要 | The mechanism controlling the soot process of a laminar jet diffusion flame is investigated through experiments and theoretical analyses. The effect of hydrodynamic characteristics on the soot volume fraction and smoke point of jet flames is focused on. The luminous flame height at smoke point under normal gravity and microgravity environment were compared. The soot concentration and temperature distributions of laminar ethylene diffusion flames with different co-flow air velocities and fuel nozzle diameters are measured by light extinction method and RGB two-color pyrometry method, respectively. High co-flow air velocity and small nozzle diameter can reduce the soot content in the flame, resulting in a higher smoke point, which is related to the increase in flame temperature caused by a shorter residence time and better fuel-air mixing conditions. The simple prediction of the theoretical oxidation zone shows that decreasing the nozzle diameter may make the oxidation zone longer, favouring the oxidation of soot in the flame tip region. Furthermore, a brief theoretical analysis of the contributions of fuel exit momentum and buoyancy in residence time during fuel combustion is presented. It is considered that when the fuel outlet diameter is small, the nozzle diameter may affect the residence time and hence the smoke point to a greater extent. This work provides new insights into the influence of hydrodynamics on soot process in laminar jet diffusion flame. |
| 分类号 | Q3 |
| WOS关键词 | SMOKE-POINT ; MICROGRAVITY ; SHAPES ; SUPPRESSION ; TENDENCY ; MODEL ; ABEL |
| 资助项目 | Space Application System of China Manned Space Program |
| WOS研究方向 | Engineering ; Thermodynamics ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001536219200001 |
| 资助机构 | Space Application System of China Manned Space Program |
| 其他责任者 | 朱凤，王双峰 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/102322]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Qingdao Univ Sci & Technol, Coll Electromech Engn, Qingdao 266100, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu K,Zhu F,Wang SF,et al. Influence of Hydrodynamics on Soot Process in Laminar Jet Diffusion Flame[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2025,37(4):11. |
| APA | 刘琨,朱凤,王双峰,王秀珍,&Jiang, Jieyu.(2025).Influence of Hydrodynamics on Soot Process in Laminar Jet Diffusion Flame.MICROGRAVITY SCIENCE AND TECHNOLOGY,37(4),11. |
| MLA | 刘琨,et al."Influence of Hydrodynamics on Soot Process in Laminar Jet Diffusion Flame".MICROGRAVITY SCIENCE AND TECHNOLOGY 37.4(2025):11. |
入库方式： OAI收割
来源：力学研究所
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