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CHARACTERISTICS OF THERMOCAPILLARY CONVECTION IN LIQUID BRIDGE WITH DYNAMIC INTERFACE UNDER ZERO GRAVITY.

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Title: CHARACTERISTICS OF THERMOCAPILLARY CONVECTION IN LIQUID BRIDGE WITH DYNAMIC INTERFACE UNDER ZERO GRAVITY.
Authors: WU, Zhipu1, BU, Tongtong2, SUN, Jiantao1, ZOU, Yong1 yong.zou@163.com, TANG, Xubing1, HUANG, Xianshan1, DING, Shoujun1 sjding@ahut.edu.cn, HUANG, Hulin2
Source: Thermal Science. 2026, Vol. 30 Issue 3A, p1793-1806. 14p.
Subjects: Vortex motion, Deformation of surfaces, Weightlessness, Marangoni effect, Fluid-structure interaction, Thermal gradient measurment
Abstract: In this study, the volume of fluid method was used to capture the free surface deformation of the liquid bridge. The temperature difference, ΔT, between the two ends of the liquid bridge and its height-diameter ratio, Hr, were varied, and the simulation results were combined with spectral analysis so as to investigate their effects on the shape of the interface of the liquid bridge. The results show that the interface shape of the liquid bridge is similar to a "waist", which is wider at the top and bottom and slightly narrower in the middle. Additionally, two vortices with opposite and symmetric flow directions are formed in the liquid bridge. Notably, the dominant frequencies of the velocity and temperature oscillations in the liquid bridge are the same. With the increase of temperature difference and height-diameter ratio, the degree of deformation of the interface increases, but the rate of its increase gradually decreases. The velocity within the liquid bridge oscillates around a stable mean value, S, which increases with temperature difference and height-diameter ratio. Conversely, the dominant frequency of these velocity oscillations diminishes with elevated temperature difference and height-diameter ratio. Furthermore, at height-diameter ratio is 1.5, the main vortex within the liquid bridge splits from one vortex cell into two separate vortex cells. [ABSTRACT FROM AUTHOR]
Copyright of Thermal Science is the property of Society of Thermal Engineers of Serbia 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.)
Database: Engineering Source
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  Data: CHARACTERISTICS OF THERMOCAPILLARY CONVECTION IN LIQUID BRIDGE WITH DYNAMIC INTERFACE UNDER ZERO GRAVITY.
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  Data: <searchLink fieldCode="JN" term="%22Thermal+Science%22">Thermal Science</searchLink>. 2026, Vol. 30 Issue 3A, p1793-1806. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Vortex+motion%22">Vortex motion</searchLink><br /><searchLink fieldCode="DE" term="%22Deformation+of+surfaces%22">Deformation of surfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Weightlessness%22">Weightlessness</searchLink><br /><searchLink fieldCode="DE" term="%22Marangoni+effect%22">Marangoni effect</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid-structure+interaction%22">Fluid-structure interaction</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+gradient+measurment%22">Thermal gradient measurment</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this study, the volume of fluid method was used to capture the free surface deformation of the liquid bridge. The temperature difference, ΔT, between the two ends of the liquid bridge and its height-diameter ratio, Hr, were varied, and the simulation results were combined with spectral analysis so as to investigate their effects on the shape of the interface of the liquid bridge. The results show that the interface shape of the liquid bridge is similar to a "waist", which is wider at the top and bottom and slightly narrower in the middle. Additionally, two vortices with opposite and symmetric flow directions are formed in the liquid bridge. Notably, the dominant frequencies of the velocity and temperature oscillations in the liquid bridge are the same. With the increase of temperature difference and height-diameter ratio, the degree of deformation of the interface increases, but the rate of its increase gradually decreases. The velocity within the liquid bridge oscillates around a stable mean value, S, which increases with temperature difference and height-diameter ratio. Conversely, the dominant frequency of these velocity oscillations diminishes with elevated temperature difference and height-diameter ratio. Furthermore, at height-diameter ratio is 1.5, the main vortex within the liquid bridge splits from one vortex cell into two separate vortex cells. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Thermal Science is the property of Society of Thermal Engineers of Serbia 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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        Value: 10.2298/TSCI250912199W
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 14
        StartPage: 1793
    Subjects:
      – SubjectFull: Vortex motion
        Type: general
      – SubjectFull: Deformation of surfaces
        Type: general
      – SubjectFull: Weightlessness
        Type: general
      – SubjectFull: Marangoni effect
        Type: general
      – SubjectFull: Fluid-structure interaction
        Type: general
      – SubjectFull: Thermal gradient measurment
        Type: general
    Titles:
      – TitleFull: CHARACTERISTICS OF THERMOCAPILLARY CONVECTION IN LIQUID BRIDGE WITH DYNAMIC INTERFACE UNDER ZERO GRAVITY.
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            NameFull: WU, Zhipu
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            NameFull: BU, Tongtong
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            NameFull: SUN, Jiantao
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            NameFull: ZOU, Yong
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            NameFull: TANG, Xubing
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            – D: 01
              M: 03
              Text: 2026
              Type: published
              Y: 2026
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