Flame transfer functions of asymmetric conical and V-shaped flames
文献类型：期刊论文
| 作者 | Qiao Z(乔正)1,2; Lv Y(吕钰)1,2 |
| 刊名 | AEROSPACE SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 153页码:9 |
| 关键词 | G-equation Transfer function Asymmetric V-shaped flame Asymmetric conical flame Combustion instabilities |
| ISSN号 | 1270-9638 |
| DOI | 10.1016/j.ast.2024.109439 |
| 通讯作者 | Lv, Yu(lvyu@imech.ac.cn) |
| 英文摘要 | Transfer functions of asymmetric flames subjected to incident flow perturbations are explored using the classical kinematic model, the G-equation, parameterized by flame tip angle alpha, flame-base incline angle beta, and eccentricity e. With perturbations of various frequencies, we analyze perturbed asymmetric flames and derive analytical formulations of Flame Transfer Functions (FTF) for various flame conditions. It is observed that the gain of the asymmetric conical flame is increased compared to the symmetric case. Meanwhile, the amplification effect of the V-shaped flame is considerably suppressed as the flame becomes asymmetric. That means with a proper asymmetric geometry setting, the V-shaped flame no longer tends to amplify the perturbation and in other words becomes less susceptible to combustion instability. These findings have significant value for the future design and optimization of propulsion systems, where improving flame stability and reducing thermoacoustic instabilities are critical. Subsequently, a numerical study is conducted to verify the FTF results and examine the response of asymmetric flames under various perturbation levels. It has been demonstrated that the asymmetric conical flame is minimally affected by the amplitude of these perturbations, and the asymmetric V-shaped flame is highly sensitive to the convective amplitudes. |
| 分类号 | 一类 |
| WOS关键词 | LAMINAR PREMIXED FLAME ; KINEMATIC MODEL ; INSTABILITY ; PREDICTION |
| 资助项目 | NSFC Basic Science Center Program[11988102] ; Chinese Academy of Sciences[025GJHZ2022112FN] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620102] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001290552900001 |
| 资助机构 | NSFC Basic Science Center Program ; Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 其他责任者 | Lv, Yu |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96337]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Qiao Z,Lv Y. Flame transfer functions of asymmetric conical and V-shaped flames[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2024,153:9. |
| APA | 乔正,&吕钰.(2024).Flame transfer functions of asymmetric conical and V-shaped flames.AEROSPACE SCIENCE AND TECHNOLOGY,153,9. |
| MLA | 乔正,et al."Flame transfer functions of asymmetric conical and V-shaped flames".AEROSPACE SCIENCE AND TECHNOLOGY 153(2024):9. |
入库方式： OAI收割
来源：力学研究所
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