| Gas-liquid twin-fluid atomization from non-circular orifices | |
Liu, Chang1,2; Wu K(吴坤)1; Zhang, Peng3; Fan XJ(范学军)1,2
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| Corresponding Author | Wu, Kun([email protected]) |
| Source Publication | PHYSICS OF FLUIDS
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| 2024-03-01 | |
| Volume | 36Issue:3Pages:18 |
| ISSN | 1070-6631 |
| Abstract | Passive control of twin-fluid atomization can be achieved by changing the orifice shape of the injector. In this study, the characteristics of twin-fluid atomization in the outside-in-liquid injector with circular, square, and rectangular orifices at various aspect ratios were investigated experimentally and computationally. The morphology of the spray was captured by shadowgraph, the diameter and velocity of the droplets were measured by the phase Doppler particle analyzer, and numerical simulations were performed for the central gaseous core. Comparing the sprays with square and circular orifices, droplets from the non-circular orifice are generally smaller with less disparities in droplet sizes due to the more intensive turbulent disturbances and corner effect. Furthermore, the non-circular orifice also results in better spatial distribution of the spray. The droplet diameters of the spray with a square orifice do not satisfy the log-normal distribution near the orifice along the centerline of the spray, which may be attributed to the different entrainment of spray droplets by the central gas flow for the sprays with circular and non-circular orifices. The twin-fluid sprays produced by the rectangular orifice also exhibit the same axial switching effect as in the high-pressure gaseous jet flow, in which the spray diffusion in the minor axis is more extensive than that in the major axis. Moreover, the droplets' Sauter mean diameter produced by the rectangular orifice is more sensitive to the size in the minor axis of the orifice and decreases as the aspect ratio of the orifice increases given the same cross-sectional area. |
| DOI | 10.1063/5.0194926 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001181203900006 |
| WOS Keyword | FLOW ; SPRAY ; BREAKUP ; VISCOSITY ; STABILITY ; ATOMIZER ; JETS ; SIZE |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | High-level Innovation Research Institute Program of Guangdong Province[2020B0909010003] ; Research Grants Council of the Hong Kong Special Administrative Region, China[CityU 15218820] ; Research Grants Council of the Hong Kong Special Administrative Region, China[CityU 15222421] |
| Funding Organization | High-level Innovation Research Institute Program of Guangdong Province ; Research Grants Council of the Hong Kong Special Administrative Region, China |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Wu, Kun |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94867 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.City Univ Hong Kong, Dept Mech Engn, Kowloon, Kowloon Tong, Hong Kong 999077, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Chang,Wu K,Zhang, Peng,et al. Gas-liquid twin-fluid atomization from non-circular orifices[J]. PHYSICS OF FLUIDS,2024,36,3,:18.Rp_Au:Wu, Kun |
| APA | Liu, Chang,吴坤,Zhang, Peng,&范学军.(2024).Gas-liquid twin-fluid atomization from non-circular orifices.PHYSICS OF FLUIDS,36(3),18. |
| MLA | Liu, Chang,et al."Gas-liquid twin-fluid atomization from non-circular orifices".PHYSICS OF FLUIDS 36.3(2024):18. |
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