Studies on the flame structure and drag of a combusting droplet group
Droplet combustion has been studied by experiments and numerical simulation for many years, and most of studies were done about single droplets. As for droplet groups, some theoretical and experimental studies were reported, but less of numerical studies. One of the important characteristics is the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Polskie Towarzystwo Naukowe Silników Spalinowych/Polish Scientific Society of Combustion Engines
2023-02-01
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| Series: | Combustion Engines |
| Subjects: | |
| Online Access: | http://www.combustion-engines.eu/Studies-on-the-flame-structure-and-drag-of-a-combusting-droplet-group,160506,0,2.html |
| _version_ | 1797803695144960000 |
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| author | Lixing Zhou Ke Li Ting Sun |
| author_facet | Lixing Zhou Ke Li Ting Sun |
| author_sort | Lixing Zhou |
| collection | DOAJ |
| description | Droplet combustion has been studied by experiments and numerical simulation for many years, and most of studies were done about single droplets. As for droplet groups, some theoretical and experimental studies were reported, but less of numerical studies. One of the important characteristics is the drag of combusting droplets, which is closely related to flame structure and is a sub-model in numerical simulation of spray combustion. There are contradictory research results for the drag of combusting droplets. In the present paper, large-eddy simulation (LES) is used to study the flame structure and drag of a combusting ethanol-droplet group. The results show that there are three combustion modes: fully-enveloped flame, partially-enveloped flame and wake flame in a droplet group, leading to the change of the drag with inlet velocities. It is found that the drag of droplets in the group is much smaller than that of a non-combusting particle in isothermal flows |
| first_indexed | 2024-03-13T05:25:48Z |
| format | Article |
| id | doaj.art-e7ec7547dde44818b01ee7c32fd58633 |
| institution | Directory Open Access Journal |
| issn | 2300-9896 2658-1442 |
| language | English |
| last_indexed | 2024-03-13T05:25:48Z |
| publishDate | 2023-02-01 |
| publisher | Polskie Towarzystwo Naukowe Silników Spalinowych/Polish Scientific Society of Combustion Engines |
| record_format | Article |
| series | Combustion Engines |
| spelling | doaj.art-e7ec7547dde44818b01ee7c32fd586332023-06-15T07:41:56ZengPolskie Towarzystwo Naukowe Silników Spalinowych/Polish Scientific Society of Combustion EnginesCombustion Engines2300-98962658-14422023-02-0119323810.19206/CE-160506160506Studies on the flame structure and drag of a combusting droplet groupLixing Zhou0https://orcid.org/0000-0002-1443-3099Ke Li1Ting Sun2Engineering Mechanics, Tsinghua University, ChinaSchool of Energy and Environmental Engineering, Inner Mongolia University of Science and Technology, ChinaEngineering Mechanics, Tsinghua University, ChinaDroplet combustion has been studied by experiments and numerical simulation for many years, and most of studies were done about single droplets. As for droplet groups, some theoretical and experimental studies were reported, but less of numerical studies. One of the important characteristics is the drag of combusting droplets, which is closely related to flame structure and is a sub-model in numerical simulation of spray combustion. There are contradictory research results for the drag of combusting droplets. In the present paper, large-eddy simulation (LES) is used to study the flame structure and drag of a combusting ethanol-droplet group. The results show that there are three combustion modes: fully-enveloped flame, partially-enveloped flame and wake flame in a droplet group, leading to the change of the drag with inlet velocities. It is found that the drag of droplets in the group is much smaller than that of a non-combusting particle in isothermal flowshttp://www.combustion-engines.eu/Studies-on-the-flame-structure-and-drag-of-a-combusting-droplet-group,160506,0,2.htmldrag forcedroplet-group combustionlarge-eddy-simulationflame structure |
| spellingShingle | Lixing Zhou Ke Li Ting Sun Studies on the flame structure and drag of a combusting droplet group Combustion Engines drag force droplet-group combustion large-eddy-simulation flame structure |
| title | Studies on the flame structure and drag of a combusting droplet group |
| title_full | Studies on the flame structure and drag of a combusting droplet group |
| title_fullStr | Studies on the flame structure and drag of a combusting droplet group |
| title_full_unstemmed | Studies on the flame structure and drag of a combusting droplet group |
| title_short | Studies on the flame structure and drag of a combusting droplet group |
| title_sort | studies on the flame structure and drag of a combusting droplet group |
| topic | drag force droplet-group combustion large-eddy-simulation flame structure |
| url | http://www.combustion-engines.eu/Studies-on-the-flame-structure-and-drag-of-a-combusting-droplet-group,160506,0,2.html |
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