Droplet impingement on a heated surface
Droplet impingement behaviours affects the surface performance for multiple applications such as heat transfer, boiling and anti-icing and condensation. This study looks into the dynamics of droplet impingement on a hybrid surface of hydrophilic and super-hydrophobic nature. The test specimen will b...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/150176 |
| _version_ | 1824456735683772416 |
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| author | Chia, Patrick Chee Leong |
| author2 | Fei Duan |
| author_facet | Fei Duan Chia, Patrick Chee Leong |
| author_sort | Chia, Patrick Chee Leong |
| collection | NTU |
| description | Droplet impingement behaviours affects the surface performance for multiple applications such as heat transfer, boiling and anti-icing and condensation. This study looks into the dynamics of droplet impingement on a hybrid surface of hydrophilic and super-hydrophobic nature. The test specimen will be specially fabricated to have half the behaviour of hydrophilic and half of hydrophobic. The impinging droplet will be dropped in a controlled environment onto the interface separating the hydrophilic and hydrophobic side. The variables for this study will be the temperature range of 50-340C and droplet velocity as a consequence of variation in drop height (10-70mm). Surface impingement of water droplets depend on the nature of fluid and surface interaction. This study will look at the various phenomena that occurs as result of the surface interaction with the impinging droplet. To study the impingement behaviour on a heated surface we employ the help of a high speed camera to capture the side profile of the impingement process. Also, an Infrared camera is used to capture the top view of this process. Results discussed in this study will be primarily based on the results from the high-speed camera with the Infrared imaging results to be used as a supplement for further analysis. In our analysis it was found that weber number has a large impact on the spreading diameter of the impinging droplet. Furthermore, the hydrophilic properties had a heavy influence on the receeding regime and the boiling regime of the impinging droplet. The results obtained from this study is backed with theoretical data explained in the following sections. While the study of impingement behaviour is growing field of interest. Further studies can be done to look at impingement droplet of varying mediums on a hybrid surface. |
| first_indexed | 2025-02-19T03:58:50Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/150176 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:58:50Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1501762021-05-25T05:06:56Z Droplet impingement on a heated surface Chia, Patrick Chee Leong Fei Duan School of Mechanical and Aerospace Engineering FeiDuan@ntu.edu.sg Engineering::Mechanical engineering Droplet impingement behaviours affects the surface performance for multiple applications such as heat transfer, boiling and anti-icing and condensation. This study looks into the dynamics of droplet impingement on a hybrid surface of hydrophilic and super-hydrophobic nature. The test specimen will be specially fabricated to have half the behaviour of hydrophilic and half of hydrophobic. The impinging droplet will be dropped in a controlled environment onto the interface separating the hydrophilic and hydrophobic side. The variables for this study will be the temperature range of 50-340C and droplet velocity as a consequence of variation in drop height (10-70mm). Surface impingement of water droplets depend on the nature of fluid and surface interaction. This study will look at the various phenomena that occurs as result of the surface interaction with the impinging droplet. To study the impingement behaviour on a heated surface we employ the help of a high speed camera to capture the side profile of the impingement process. Also, an Infrared camera is used to capture the top view of this process. Results discussed in this study will be primarily based on the results from the high-speed camera with the Infrared imaging results to be used as a supplement for further analysis. In our analysis it was found that weber number has a large impact on the spreading diameter of the impinging droplet. Furthermore, the hydrophilic properties had a heavy influence on the receeding regime and the boiling regime of the impinging droplet. The results obtained from this study is backed with theoretical data explained in the following sections. While the study of impingement behaviour is growing field of interest. Further studies can be done to look at impingement droplet of varying mediums on a hybrid surface. Bachelor of Engineering (Mechanical Engineering) 2021-05-25T05:06:56Z 2021-05-25T05:06:56Z 2021 Final Year Project (FYP) Chia, P. C. L. (2021). Droplet impingement on a heated surface. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/150176 https://hdl.handle.net/10356/150176 en A099 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Mechanical engineering Chia, Patrick Chee Leong Droplet impingement on a heated surface |
| title | Droplet impingement on a heated surface |
| title_full | Droplet impingement on a heated surface |
| title_fullStr | Droplet impingement on a heated surface |
| title_full_unstemmed | Droplet impingement on a heated surface |
| title_short | Droplet impingement on a heated surface |
| title_sort | droplet impingement on a heated surface |
| topic | Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/150176 |
| work_keys_str_mv | AT chiapatrickcheeleong dropletimpingementonaheatedsurface |