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Dynamics of three ferrofluid droplets in a rotating magnetic field.

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Title: Dynamics of three ferrofluid droplets in a rotating magnetic field.
Authors: Zhou, Xinping1,2 (AUTHOR) xpzhou08@hust.edu.cn, Xiao, Wencai1 (AUTHOR), Zhang, Qi1 (AUTHOR), Liang, Chunyue1 (AUTHOR), Zhang, Wanqiu1 (AUTHOR), Zhang, Fei1 (AUTHOR)
Source: Applied Mathematics & Mechanics. Mar2025, Vol. 46 Issue 3, p591-600. 10p.
Subjects: Rotating fluid, Magnetic fields, Computer simulation, Capillaries
Abstract: Two-dimensional (2D) direct numerical simulations on the dynamics of three identical ferrofluid droplets suspended in a non-magnetic ambient fluid under a rotating uniform magnetic field are conducted, and the motion and deformation of the three ferrofluid droplets are studied in this paper. Results show that there are four modes (i.e., the three droplets' direct coalescence (TC), the coalescence of two droplets and the subsequent planetary motion with the third droplet (CAP), the three droplets' planetary motion (TP), and the independent spin (IS)) for the three ferrofluid droplets, dependent on the magnetic Bond number (Bom) and the initial distance (d0) between two of the droplets. It is found that the decrease in d0 and the increase in Bom can make the droplets' mode change from the IS to the planetary motion, and then turn to the CAP. Furthermore, reducing Bom or d0 is helpful for the droplets to become merged. [ABSTRACT FROM AUTHOR]
Copyright of Applied Mathematics & Mechanics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Xinping%22">Zhou, Xinping</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> xpzhou08@hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Wencai%22">Xiao, Wencai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qi%22">Zhang, Qi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liang%2C+Chunyue%22">Liang, Chunyue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wanqiu%22">Zhang, Wanqiu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Fei%22">Zhang, Fei</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="DE" term="%22Rotating+fluid%22">Rotating fluid</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+fields%22">Magnetic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Capillaries%22">Capillaries</searchLink>
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  Data: Two-dimensional (2D) direct numerical simulations on the dynamics of three identical ferrofluid droplets suspended in a non-magnetic ambient fluid under a rotating uniform magnetic field are conducted, and the motion and deformation of the three ferrofluid droplets are studied in this paper. Results show that there are four modes (i.e., the three droplets' direct coalescence (TC), the coalescence of two droplets and the subsequent planetary motion with the third droplet (CAP), the three droplets' planetary motion (TP), and the independent spin (IS)) for the three ferrofluid droplets, dependent on the magnetic Bond number (Bom) and the initial distance (d0) between two of the droplets. It is found that the decrease in d0 and the increase in Bom can make the droplets' mode change from the IS to the planetary motion, and then turn to the CAP. Furthermore, reducing Bom or d0 is helpful for the droplets to become merged. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Applied Mathematics & Mechanics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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              Text: Mar2025
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