Numeral simulation of droplet evaporation-atomization under hot air flow
In the field of cerium oxide preparation by spray pyrolysis, understanding the droplet atomization-evaporation process is an innovative and promising concept. The spray pyrolysis process offers significant advantages over conventional methods, promoting energy efficiency and environmental sustainabi...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24017027 |
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| author | Chao Lv Lu-Lu Zhang Ning Wei Xu-Xin Chen Hong-Liang Zhao Wei-Guang Hao |
| author_facet | Chao Lv Lu-Lu Zhang Ning Wei Xu-Xin Chen Hong-Liang Zhao Wei-Guang Hao |
| author_sort | Chao Lv |
| collection | DOAJ |
| description | In the field of cerium oxide preparation by spray pyrolysis, understanding the droplet atomization-evaporation process is an innovative and promising concept. The spray pyrolysis process offers significant advantages over conventional methods, promoting energy efficiency and environmental sustainability by eliminating wastewater and exhaust gas emissions. Optimizing energy utilization to meet increasing demands is a critical focus. Moreover, the impact of hot air flow on droplets directly influences product morphology, thereby enhancing the high-value application of cerium oxide. Using FLUENT software, this study established a single droplet evaporation model and a coupling model for droplet atomization-evaporation during secondary atomization. The research explored the evaporation mechanism and microscopic changes occurring during droplet atomization. The research results indicate that increasing the ambient temperature, enhancing convective intensity, and changing the diameter accelerate the evaporation rate of the droplet, lead to more complete droplet fragmentation, and shorten both the evaporation lifetime and duration. The deformation process of the droplet in the hot airflow is not instantaneous, but rather a continuous energy transfer process. A distinct groove forms around the parent droplet and persists throughout the entire process. Additionally, investigating hot gas flow fragmentation positively impacts the efficient combustion of engine fuel. |
| format | Article |
| id | doaj-art-27b86e8fa2454436a9da50cd6db9400e |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-27b86e8fa2454436a9da50cd6db9400e2025-01-08T04:52:50ZengElsevierCase Studies in Thermal Engineering2214-157X2025-01-0165105671Numeral simulation of droplet evaporation-atomization under hot air flowChao Lv0Lu-Lu Zhang1Ning Wei2Xu-Xin Chen3Hong-Liang Zhao4Wei-Guang Hao5Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China; Corresponding author.Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, ChinaKey Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, ChinaKey Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, ChinaCollege of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Corresponding author.Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, ChinaIn the field of cerium oxide preparation by spray pyrolysis, understanding the droplet atomization-evaporation process is an innovative and promising concept. The spray pyrolysis process offers significant advantages over conventional methods, promoting energy efficiency and environmental sustainability by eliminating wastewater and exhaust gas emissions. Optimizing energy utilization to meet increasing demands is a critical focus. Moreover, the impact of hot air flow on droplets directly influences product morphology, thereby enhancing the high-value application of cerium oxide. Using FLUENT software, this study established a single droplet evaporation model and a coupling model for droplet atomization-evaporation during secondary atomization. The research explored the evaporation mechanism and microscopic changes occurring during droplet atomization. The research results indicate that increasing the ambient temperature, enhancing convective intensity, and changing the diameter accelerate the evaporation rate of the droplet, lead to more complete droplet fragmentation, and shorten both the evaporation lifetime and duration. The deformation process of the droplet in the hot airflow is not instantaneous, but rather a continuous energy transfer process. A distinct groove forms around the parent droplet and persists throughout the entire process. Additionally, investigating hot gas flow fragmentation positively impacts the efficient combustion of engine fuel.http://www.sciencedirect.com/science/article/pii/S2214157X24017027Hot air flowSingle dropletAtomizationEvaporationNumerical simulation |
| spellingShingle | Chao Lv Lu-Lu Zhang Ning Wei Xu-Xin Chen Hong-Liang Zhao Wei-Guang Hao Numeral simulation of droplet evaporation-atomization under hot air flow Case Studies in Thermal Engineering Hot air flow Single droplet Atomization Evaporation Numerical simulation |
| title | Numeral simulation of droplet evaporation-atomization under hot air flow |
| title_full | Numeral simulation of droplet evaporation-atomization under hot air flow |
| title_fullStr | Numeral simulation of droplet evaporation-atomization under hot air flow |
| title_full_unstemmed | Numeral simulation of droplet evaporation-atomization under hot air flow |
| title_short | Numeral simulation of droplet evaporation-atomization under hot air flow |
| title_sort | numeral simulation of droplet evaporation atomization under hot air flow |
| topic | Hot air flow Single droplet Atomization Evaporation Numerical simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24017027 |
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