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| Simulation study on spreading characteristics of droplet impinging under different wall conditions |
| Received:June 21, 2021 Revised:August 01, 2021 |
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| DOI：10.7511/jslx20210621004 |
| KeyWord:CLSVOF method droplet impinging dynamic contact angle wall temperature |
| Author | Institution |
| 周鑫 |
新疆大学 电气工程学院, 乌鲁木齐 |
| 马小晶 |
新疆大学 电气工程学院, 乌鲁木齐 |
| 胡丽娜 |
新疆大学 电气工程学院, 乌鲁木齐 |
| 刘佳 |
中国原子能科学研究院核工程设计研究所, 北京 |
| 张博文 |
新疆大学 电气工程学院, 乌鲁木齐 |
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| Abstract: |
| The heat transfer and flow problems of droplet impinging walls of different wettability widely exist in nature and industrial production.The research adopts the CLSVOF method with dynamic contact angle,and considers the change of droplet physical parameters with temperature.The model of droplet impinging on the wall is established to simulate the process of droplet impinging and flowing,and the validity of the model is verified by comparing with the experimental results.On this basis,the study on the impinging of droplet considering the wettability of the wall under the effect of heat transfer is also carried out,and the effect of heat transfer on spreading characteristics of droplet is investigated.The research shows that during the impinging process,the droplet spreads first and then gradually shrinks.Compared with the results of the static contact angle model,the spreading characteristics of droplet obtained by the dynamic contact angle model are more consistent with the experimental results.As the contact angle increases,it is difficult for the droplet to spread at the beginning of impinging and then easily shrink.Although the heat transfer affects the droplet spreading diameter,it does not change the spreading trend of droplet. |
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