Experimental estimation of turbulence modulation in droplet-laden two-phase jet
文献类型：期刊论文
| 作者 | Wu, Hao2,3; Zhang, Zhenyu3; Zhang, Fujun3; Wu K(吴坤)1; Roberts, William L.2 |
| 刊名 | PHYSICAL REVIEW FLUIDS
 |
| 出版日期 | 2023-09-05 |
| 卷号 | 8期号:9页码:27 |
| ISSN号 | 2469-990X |
| DOI | 10.1103/PhysRevFluids.8.094301 |
| 通讯作者 | Zhang, Zhenyu(zhenyu.zhang@bit.edu.cn) |
| 英文摘要 | The effect of liquid droplets generated from air-assisted atomization on gas flow characteristics was studied experimentally. A phase/Doppler particle analyzer was used to measure velocity and size distributions of continuous and dispersed phases in the dropletladen two-phase flow. A comparison of mean gas velocity with and without droplets indicates the expected influence of dispersed phase on the carrier phase, i.e., two-way coupling. The flow characterization result shows the presence of liquid droplets contributes to the increase of gas-phase flow velocity in the spray field. The effect of liquid droplets on gas-phase turbulence is manifested in three ways. First, the presence of droplets leads to the increase in fluctuation velocity of gas-phase flow. Subsequently, it is observed that the range of fluctuation velocities in the gas phase is expanded in two-phase flow compared with single-phase flow. In the region characterized by a steep velocity gradient, the initial gas fluctuation velocities in two-phase flow demonstrate a notable enhancement of 20% compared with single-phase flow. Furthermore, the presence of droplets induces axial stretching within the shear region of the gas phase, and this stretching effect is particularly pronounced in cases of higher fuel-injection durations, primarily due to the influence of droplet gravity. The data obtained from the analysis of velocity gradient and fluctuation velocity within the two-phase flow field reveal a distinct segmental linear relationship, deviating from previous findings reported in the literature and highlighting a deeper understanding of the underlying mechanisms in current two-phase flow systems. |
| 分类号 | 二类 |
| WOS关键词 | PARTICLE-SIZE ; FLOW ; ATOMIZATION ; CHANNEL ; SPRAY ; INTENSITY ; COARSE |
| 资助项目 | National Natural Science Foundation of China[12072194] ; National Natural Science Foundation of China[51806013] ; foundation research funds of the Ministry of Industry and Information Technology[JCKY2019602D018] ; Beijing Institute of Technology Research Fund Program for Young Scholars[2020CX04047] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001070817900003 |
| 资助机构 | National Natural Science Foundation of China ; foundation research funds of the Ministry of Industry and Information Technology ; Beijing Institute of Technology Research Fund Program for Young Scholars |
| 其他责任者 | Zhang, Zhenyu |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/93005]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 2.King Abdullah Univ Sci & Technol, Clean Combust Res Ctr, Thuwal, Saudi Arabia; 3.Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wu, Hao,Zhang, Zhenyu,Zhang, Fujun,et al. Experimental estimation of turbulence modulation in droplet-laden two-phase jet[J]. PHYSICAL REVIEW FLUIDS,2023,8(9):27. |
| APA | Wu, Hao,Zhang, Zhenyu,Zhang, Fujun,吴坤,&Roberts, William L..(2023).Experimental estimation of turbulence modulation in droplet-laden two-phase jet.PHYSICAL REVIEW FLUIDS,8(9),27. |
| MLA | Wu, Hao,et al."Experimental estimation of turbulence modulation in droplet-laden two-phase jet".PHYSICAL REVIEW FLUIDS 8.9(2023):27. |
入库方式： OAI收割
来源：力学研究所
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