Experimental study on streamwise interaction of burning compound droplets
Compound droplet interaction is an important aspect of spray combustion. In this work, the stream wise interaction of burning compound droplets has been conducted experimentally in detail. The constant value of di = 500 μm is considered for the compound droplet diameter and two values of β = 50% and...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-10-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X20303841 |
| _version_ | 1818457287525662720 |
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| author | Chun-Kuei Chen Wei-Mon Yan Ta-Hui Lin |
| author_facet | Chun-Kuei Chen Wei-Mon Yan Ta-Hui Lin |
| author_sort | Chun-Kuei Chen |
| collection | DOAJ |
| description | Compound droplet interaction is an important aspect of spray combustion. In this work, the stream wise interaction of burning compound droplets has been conducted experimentally in detail. The constant value of di = 500 μm is considered for the compound droplet diameter and two values of β = 50% and 85% are used for the H2O content. The effects of primary distance of compound droplet (Si) in the range of 2.5–100 and environmental O2 concentration (ΩO2) in the range of 21%–30% on the flame width, micro-explosion, and evaporation rate are investigated. The experimental results on the compound droplets indicate that, in general the flame length increases as the primary droplet distance decreases. However, as an exception, for a droplet string with the primary distance of 2.5, the trend is reversed due to the collision-merging of the drops. The micro-explosion can be observed due to the nucleation bubble blast in the H2O core of the compound drop. The flame spread through micro-explosion is observed at Si = 10, and the effects of distance on the droplet evaporation are diminished beyond Si = 30. |
| first_indexed | 2024-12-14T22:40:10Z |
| format | Article |
| id | doaj.art-d3368fb2bedb47cebbd5a9ea107e6412 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-12-14T22:40:10Z |
| publishDate | 2020-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-d3368fb2bedb47cebbd5a9ea107e64122022-12-21T22:45:00ZengElsevierCase Studies in Thermal Engineering2214-157X2020-10-0121100707Experimental study on streamwise interaction of burning compound dropletsChun-Kuei Chen0Wei-Mon Yan1Ta-Hui Lin2Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan, 70101, TaiwanDepartment of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan; Corresponding author.Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan, 70101, Taiwan; Department of Mechanical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan; Corresponding author. Department of Mechanical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.Compound droplet interaction is an important aspect of spray combustion. In this work, the stream wise interaction of burning compound droplets has been conducted experimentally in detail. The constant value of di = 500 μm is considered for the compound droplet diameter and two values of β = 50% and 85% are used for the H2O content. The effects of primary distance of compound droplet (Si) in the range of 2.5–100 and environmental O2 concentration (ΩO2) in the range of 21%–30% on the flame width, micro-explosion, and evaporation rate are investigated. The experimental results on the compound droplets indicate that, in general the flame length increases as the primary droplet distance decreases. However, as an exception, for a droplet string with the primary distance of 2.5, the trend is reversed due to the collision-merging of the drops. The micro-explosion can be observed due to the nucleation bubble blast in the H2O core of the compound drop. The flame spread through micro-explosion is observed at Si = 10, and the effects of distance on the droplet evaporation are diminished beyond Si = 30.http://www.sciencedirect.com/science/article/pii/S2214157X20303841Streamwise droplet interactionCompound dropletBurning dropletsMicro-explosionFlame widthEvaporation rate |
| spellingShingle | Chun-Kuei Chen Wei-Mon Yan Ta-Hui Lin Experimental study on streamwise interaction of burning compound droplets Case Studies in Thermal Engineering Streamwise droplet interaction Compound droplet Burning droplets Micro-explosion Flame width Evaporation rate |
| title | Experimental study on streamwise interaction of burning compound droplets |
| title_full | Experimental study on streamwise interaction of burning compound droplets |
| title_fullStr | Experimental study on streamwise interaction of burning compound droplets |
| title_full_unstemmed | Experimental study on streamwise interaction of burning compound droplets |
| title_short | Experimental study on streamwise interaction of burning compound droplets |
| title_sort | experimental study on streamwise interaction of burning compound droplets |
| topic | Streamwise droplet interaction Compound droplet Burning droplets Micro-explosion Flame width Evaporation rate |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X20303841 |
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