Numerical research on the mixing mechanism of lobed mixer with inlet swirl in linear radial distribution
文献类型：期刊论文
| 作者 | Lei, Zhijun; Zhang, Yanfeng; Zhu, Zihao; Zhu, Junqiang |
| 刊名 | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 229期号:3页码:280-297 |
| 关键词 | Lobed mixer inlet swirl streamwise vortices normal vortices jet mixing mixing nozzle |
| 英文摘要 | A detailed numerical simulation is presented to investigate the effects of inlet swirl and its radial distribution on the mixing mechanisms of a turbofan mixer with 12 lobes, by using the commercial ANSYS CFX solver and k- SST model. The core-to-bypass temperature ratio and pressure ratio were set to 2.59 and 0.97, respectively, giving the Mach number of 0.66 and bypass ratio of 2.65 at mixing nozzle outlet. In the core inlet, the swirl angle was raised from 0 degrees to 30 degrees in a uniform or linear radial distribution manner. The inlet swirl and its radial gradient did enhance the development, interaction, and dissipation of the vortices downstream of lobed mixer, resulting in accelerating the lobed jet mixing. When the inlet swirl was less than 20 degrees, the total pressure and thrust loss increments of lobed jet were acceptable and no more than 0.26% and 1.57%, respectively, compared with the baseline case. The results also showed that the three-dimensional separation bubble on center-body and the backflows along jet axis at the rail of center-body, resulting from the swirling flow between lobes' trough and center-body, were the dominant sources of total pressure and thrust losses for all cases with inlet swirl. And, reasonable radial distribution of inlet swirl could inhibit the aforementioned 3D separation and backflow, and thus limited the increment of jet mixing loss favorably. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Mechanical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | PROPER ORTHOGONAL DECOMPOSITION ; TURBOFAN EXHAUST DUCT ; FORCED MIXER ; NOZZLES ; FLOW ; DOWNSTREAM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000353037600004 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.etp.ac.cn/handle/311046/98949]  |
| 专题 | 工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI） |
| 作者单位 | Chinese Acad Sci, Inst Engn Thermophys, Key Lab Light Duty Gas Turbine, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei, Zhijun,Zhang, Yanfeng,Zhu, Zihao,et al. Numerical research on the mixing mechanism of lobed mixer with inlet swirl in linear radial distribution[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY,2015,229(3):280-297. |
| APA | Lei, Zhijun,Zhang, Yanfeng,Zhu, Zihao,&Zhu, Junqiang.(2015).Numerical research on the mixing mechanism of lobed mixer with inlet swirl in linear radial distribution.PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY,229(3),280-297. |
| MLA | Lei, Zhijun,et al."Numerical research on the mixing mechanism of lobed mixer with inlet swirl in linear radial distribution".PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY 229.3(2015):280-297. |
入库方式： OAI收割
来源：工程热物理研究所
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