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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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Main Authors:	Truong, V. Vu, Binh, D. Pham, Ho, Xuan Nang, Hung, V. Vu
Format:	Bài trích
Language:	English
Published:	AIP Publishing 2022
Subjects:	Solidification Forced convection
Online Access:	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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spelling	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	8.887929

Solidification of a hollow sessile droplet under forced convection

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