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Marangoni Motion of a Droplet in a Constriction

The present paper focuses on the motion due to the thermocapillary force of a droplet in a circular tube through the front-tracking-based simulation. The tube profile in the axial direction is generated with a sinusoidal function that induces a constriction with depth d at the middle. The droplet is...

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Bibliographic Details
Main Authors: Vinh T. Nguyen, Truong V. Vu, Phan H. Nguyen
Format: Bài trích
Language:English
Published: Springer 2022
Subjects:
Droplet
Front-tracking
Online Access:https://link.springer.com/article/10.1007/s12217-022-09958-z
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5959
https://doi.org/10.1007/s12217-022-09958-z
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spelling oai:localhost:PNK-59592022-08-17T05:54:51Z Marangoni Motion of a Droplet in a Constriction Vinh T. Nguyen Truong V. Vu Phan H. Nguyen Droplet Front-tracking The present paper focuses on the motion due to the thermocapillary force of a droplet in a circular tube through the front-tracking-based simulation. The tube profile in the axial direction is generated with a sinusoidal function that induces a constriction with depth d at the middle. The droplet is slowed down as it migrates from the cold region (ahead of the constriction) to the hot region in the downstream. Various parameters including the Marangoni number Ma, the capillary number Ca and the depth of the constriction d are varied to better understand the thermocapillary motion of the droplet under the influence of the constriction. The simulation results show that when the Ma number increases, the influence factor of the constriction increases and the migration velocity of the droplet decreases. Increasing the depth of the constriction decreases the migration velocity of the droplet. 2022-07-13T02:00:06Z 2022-07-13T02:00:06Z 2022 Bài trích https://link.springer.com/article/10.1007/s12217-022-09958-z https://dlib.phenikaa-uni.edu.vn/handle/PNK/5959 https://doi.org/10.1007/s12217-022-09958-z en Springer
institution Digital Phenikaa
collection Digital Phenikaa
language English
topic Droplet
Front-tracking
spellingShingle Droplet
Front-tracking
Vinh T. Nguyen
Truong V. Vu
Phan H. Nguyen
Marangoni Motion of a Droplet in a Constriction
description The present paper focuses on the motion due to the thermocapillary force of a droplet in a circular tube through the front-tracking-based simulation. The tube profile in the axial direction is generated with a sinusoidal function that induces a constriction with depth d at the middle. The droplet is slowed down as it migrates from the cold region (ahead of the constriction) to the hot region in the downstream. Various parameters including the Marangoni number Ma, the capillary number Ca and the depth of the constriction d are varied to better understand the thermocapillary motion of the droplet under the influence of the constriction. The simulation results show that when the Ma number increases, the influence factor of the constriction increases and the migration velocity of the droplet decreases. Increasing the depth of the constriction decreases the migration velocity of the droplet.
format Bài trích
author Vinh T. Nguyen
Truong V. Vu
Phan H. Nguyen
author_facet Vinh T. Nguyen
Truong V. Vu
Phan H. Nguyen
author_sort Vinh T. Nguyen
title Marangoni Motion of a Droplet in a Constriction
title_short Marangoni Motion of a Droplet in a Constriction
title_full Marangoni Motion of a Droplet in a Constriction
title_fullStr Marangoni Motion of a Droplet in a Constriction
title_full_unstemmed Marangoni Motion of a Droplet in a Constriction
title_sort marangoni motion of a droplet in a constriction
publisher Springer
publishDate 2022
url https://link.springer.com/article/10.1007/s12217-022-09958-z
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5959
https://doi.org/10.1007/s12217-022-09958-z
_version_ 1751856290648293376
score 8.8894005

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