Solidification of a hollow sessile droplet under forced convection
This study presents a front-tracking-based numerical analysis of the forced convection solidification of a sessile droplet on a cooling surface. The droplet, a hollow (or compound) droplet with an encapsulated gas core, undergoes a liquid-to-solid phase change in its shell. This phase change starts...
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| Định dạng: | Bài trích |
| Ngôn ngữ: | English |
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AIP Publishing
2022
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| Chủ đề: | |
| Truy cập trực tuyến: | https://aip.scitation.org/doi/10.1063/5.0084365 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5746 https://doi.org/10.1063/5.0084365 |
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oai:localhost:PNK-57462022-08-17T05:54:52Z Solidification of a hollow sessile droplet under forced convection Truong, V. Vu Binh, D. Pham Ho, Xuan Nang Hung, V. Vu Solidification Forced convection This study presents a front-tracking-based numerical analysis of the forced convection solidification of a sessile droplet on a cooling surface. The droplet, a hollow (or compound) droplet with an encapsulated gas core, undergoes a liquid-to-solid phase change in its shell. This phase change starts from the surface. Meanwhile, the surrounding gas, which is characterized by its Reynolds number Re and temperature, moves toward the droplet parallel to the axis of symmetry. When the temperature of the forced flow is below the solidification value (i.e., cold-forced convection), increasing the strength of the forced flow shortens the solidification process. In contrast, increasing the Re number of a hot-forced convection system prolongs solidification. In other words, an increase in the forced flow temperature causes the entire liquid shell to solidify more slowly. Thinner shells require more time to solidify completely than thicker ones. The forced flow does not influence the formation of an apex at the top of the outer droplet surface. The aforementioned apex results from volume expansion. The effects of other parameters, for example, the capillary number and the morphologies of the droplet and cooling surface, are also determined 2022-05-05T07:26:17Z 2022-05-05T07:26:17Z 2022 Bài trích https://aip.scitation.org/doi/10.1063/5.0084365 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5746 https://doi.org/10.1063/5.0084365 en AIP Publishing |
| institution |
Digital Phenikaa |
| collection |
Digital Phenikaa |
| language |
English |
| topic |
Solidification Forced convection |
| spellingShingle |
Solidification Forced convection Truong, V. Vu Binh, D. Pham Ho, Xuan Nang Hung, V. Vu Solidification of a hollow sessile droplet under forced convection |
| description |
This study presents a front-tracking-based numerical analysis of the forced convection solidification of a sessile droplet on a cooling surface. The droplet, a hollow (or compound) droplet with an encapsulated gas core, undergoes a liquid-to-solid phase change in its shell. This phase change starts from the surface. Meanwhile, the surrounding gas, which is characterized by its Reynolds number Re and temperature, moves toward the droplet parallel to the axis of symmetry. When the temperature of the forced flow is below the solidification value (i.e., cold-forced convection), increasing the strength of the forced flow shortens the solidification process. In contrast, increasing the Re number of a hot-forced convection system prolongs solidification. In other words, an increase in the forced flow temperature causes the entire liquid shell to solidify more slowly. Thinner shells require more time to solidify completely than thicker ones. The forced flow does not influence the formation of an apex at the top of the outer droplet surface. The aforementioned apex results from volume expansion. The effects of other parameters, for example, the capillary number and the morphologies of the droplet and cooling surface, are also determined |
| format |
Bài trích |
| author |
Truong, V. Vu Binh, D. Pham Ho, Xuan Nang Hung, V. Vu |
| author_facet |
Truong, V. Vu Binh, D. Pham Ho, Xuan Nang Hung, V. Vu |
| author_sort |
Truong, V. Vu |
| title |
Solidification of a hollow sessile droplet under forced convection |
| title_short |
Solidification of a hollow sessile droplet under forced convection |
| title_full |
Solidification of a hollow sessile droplet under forced convection |
| title_fullStr |
Solidification of a hollow sessile droplet under forced convection |
| title_full_unstemmed |
Solidification of a hollow sessile droplet under forced convection |
| title_sort |
solidification of a hollow sessile droplet under forced convection |
| publisher |
AIP Publishing |
| publishDate |
2022 |
| url |
https://aip.scitation.org/doi/10.1063/5.0084365 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5746 https://doi.org/10.1063/5.0084365 |
| _version_ |
1751856314045169664 |
| score |
8.891787 |