Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid Film
The Simultaneous impact of a hollow droplet and a continuous dense droplet on a liquid film was investigated using the coupled level set and volume of fluid (CLSVOF) method. Analyses included fluid dynamics and heat transfer characteristics in impact. Results showed that the interfacial phenomena af...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2022.911458/full |
| _version_ | 1818252912527147008 |
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| author | Dashu Li Gangtao Liang Dan Hua |
| author_facet | Dashu Li Gangtao Liang Dan Hua |
| author_sort | Dashu Li |
| collection | DOAJ |
| description | The Simultaneous impact of a hollow droplet and a continuous dense droplet on a liquid film was investigated using the coupled level set and volume of fluid (CLSVOF) method. Analyses included fluid dynamics and heat transfer characteristics in impact. Results showed that the interfacial phenomena after impact incorporates spreading, central jet between droplets, edge liquid sheet, and counter jet inside the hollow droplet. The pressure gradient is the major cause for the above phenomena. The significant parameter of impact velocity is closely related to the dynamics and heat transfer for droplets impacting on a liquid film. Droplets with higher impact velocity exhibit a greater spreading factor, central jet height, edge jet height, and counter jet height. Besides, wall heat flux increases more notably for droplets with a higher impact velocity. Compared with the continuous droplet, the hollow droplet shows a smaller spreading factor and edge jet height, a higher wall heat flux, but a narrow thermally affected region. This study provides a fundamental understanding for the application of high-pressure spray combustion. |
| first_indexed | 2024-12-12T16:31:43Z |
| format | Article |
| id | doaj.art-592927d323e74bdeb7015a6d9f1c8a9e |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-12-12T16:31:43Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-592927d323e74bdeb7015a6d9f1c8a9e2022-12-22T00:18:46ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2022-05-011010.3389/fenrg.2022.911458911458Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid FilmDashu Li0Gangtao Liang1Dan Hua2CNOOC Research Institute Co. Ltd., Beijing, ChinaKey Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian, ChinaJiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, ChinaThe Simultaneous impact of a hollow droplet and a continuous dense droplet on a liquid film was investigated using the coupled level set and volume of fluid (CLSVOF) method. Analyses included fluid dynamics and heat transfer characteristics in impact. Results showed that the interfacial phenomena after impact incorporates spreading, central jet between droplets, edge liquid sheet, and counter jet inside the hollow droplet. The pressure gradient is the major cause for the above phenomena. The significant parameter of impact velocity is closely related to the dynamics and heat transfer for droplets impacting on a liquid film. Droplets with higher impact velocity exhibit a greater spreading factor, central jet height, edge jet height, and counter jet height. Besides, wall heat flux increases more notably for droplets with a higher impact velocity. Compared with the continuous droplet, the hollow droplet shows a smaller spreading factor and edge jet height, a higher wall heat flux, but a narrow thermally affected region. This study provides a fundamental understanding for the application of high-pressure spray combustion.https://www.frontiersin.org/articles/10.3389/fenrg.2022.911458/fulldroplet impacthollow dropletcontinuous dense dropletcentral jetcounter jet |
| spellingShingle | Dashu Li Gangtao Liang Dan Hua Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid Film Frontiers in Energy Research droplet impact hollow droplet continuous dense droplet central jet counter jet |
| title | Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid Film |
| title_full | Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid Film |
| title_fullStr | Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid Film |
| title_full_unstemmed | Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid Film |
| title_short | Simultaneous Impact of Hollow Droplet and Continuous Dense Droplet on Liquid Film |
| title_sort | simultaneous impact of hollow droplet and continuous dense droplet on liquid film |
| topic | droplet impact hollow droplet continuous dense droplet central jet counter jet |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2022.911458/full |
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