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Bubble deformation and breakup in a non-uniform electric field.

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Title: Bubble deformation and breakup in a non-uniform electric field.
Authors: Wang, Junfeng1 (AUTHOR) wangjunfeng@ujs.edu.cn, Han, Jingfeng1 (AUTHOR), Wu, Tianyi1 (AUTHOR), Li, Bin1 (AUTHOR), Yu, Kai1 (AUTHOR), Xu, Haojie1 (AUTHOR), Zhang, Wei1 (AUTHOR) zhangwei0112@ujs.edu.cn
Source: Chemical Engineering Science. Apr2024, Vol. 287, pN.PAG-N.PAG. 1p.
Subjects: Microbubbles, Interface stability, Gas flow, Gas-liquid interfaces, High-speed photography
Abstract: • Four bubble breakup regimes were observed under the electric field. • Mixing limited leaky-dielectric into a dielectric greatly enhances the electrodispersion of bubbles. • Electric field effect on bubble deformation and breakup is more pronounced at low gas flow rates. • A wide bubble size distribution can be obtained by controlling the electric field and gas flow rate. In this paper, the deformation and breakup characteristics of bubbles during their growth in a mixture solution were studied with a needle-ring electrode configuration in the presence of an electric field by using high-speed photography. Four distinct bubble breakup behaviors of the dripping, cone, kink and branch regimes were achieved successfully by manipulating the electric field. By considering the applied voltage and gas flow rate, the cone structure, interface stability, departure frequency and bubble size distribution in different regimes were quantitatively discussed. It is found that the cone height, interface curvature, departure frequency and bubble size distribution are evidently associated with bubble breakup regimes. As the electric field strength increased, the bubbles stretched in the direction of the electric field and the instability of the gas–liquid interface became stronger, which eventually resulted in the bubbles fragmenting into a cluster of microbubbles. This work provides a fundamental understanding of bubble deformation and breakup mechanisms under the electric field. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science 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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Header DbId: egs
DbLabel: Engineering Source
An: 175344971
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Bubble deformation and breakup in a non-uniform electric field.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Junfeng%22">Wang, Junfeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangjunfeng@ujs.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Han%2C+Jingfeng%22">Han, Jingfeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Tianyi%22">Wu, Tianyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Bin%22">Li, Bin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Kai%22">Yu, Kai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Haojie%22">Xu, Haojie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wei%22">Zhang, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangwei0112@ujs.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Science%22">Chemical Engineering Science</searchLink>. Apr2024, Vol. 287, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Microbubbles%22">Microbubbles</searchLink><br /><searchLink fieldCode="DE" term="%22Interface+stability%22">Interface stability</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+flow%22">Gas flow</searchLink><br /><searchLink fieldCode="DE" term="%22Gas-liquid+interfaces%22">Gas-liquid interfaces</searchLink><br /><searchLink fieldCode="DE" term="%22High-speed+photography%22">High-speed photography</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Four bubble breakup regimes were observed under the electric field. • Mixing limited leaky-dielectric into a dielectric greatly enhances the electrodispersion of bubbles. • Electric field effect on bubble deformation and breakup is more pronounced at low gas flow rates. • A wide bubble size distribution can be obtained by controlling the electric field and gas flow rate. In this paper, the deformation and breakup characteristics of bubbles during their growth in a mixture solution were studied with a needle-ring electrode configuration in the presence of an electric field by using high-speed photography. Four distinct bubble breakup behaviors of the dripping, cone, kink and branch regimes were achieved successfully by manipulating the electric field. By considering the applied voltage and gas flow rate, the cone structure, interface stability, departure frequency and bubble size distribution in different regimes were quantitatively discussed. It is found that the cone height, interface curvature, departure frequency and bubble size distribution are evidently associated with bubble breakup regimes. As the electric field strength increased, the bubbles stretched in the direction of the electric field and the instability of the gas–liquid interface became stronger, which eventually resulted in the bubbles fragmenting into a cluster of microbubbles. This work provides a fundamental understanding of bubble deformation and breakup mechanisms under the electric field. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chemical Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science 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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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ces.2024.119741
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Microbubbles
        Type: general
      – SubjectFull: Interface stability
        Type: general
      – SubjectFull: Gas flow
        Type: general
      – SubjectFull: Gas-liquid interfaces
        Type: general
      – SubjectFull: High-speed photography
        Type: general
    Titles:
      – TitleFull: Bubble deformation and breakup in a non-uniform electric field.
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            NameFull: Wang, Junfeng
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            NameFull: Han, Jingfeng
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            NameFull: Wu, Tianyi
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            NameFull: Li, Bin
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            NameFull: Yu, Kai
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            NameFull: Xu, Haojie
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            – D: 05
              M: 04
              Text: Apr2024
              Type: published
              Y: 2024
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              Value: 287
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