View in EDS

Analysis of Multimodal Magnetohydrodynamic Instability at the Bath-Metal Interface in Aluminum Reduction Cells.

Saved in:
Bibliographic Details
Title: Analysis of Multimodal Magnetohydrodynamic Instability at the Bath-Metal Interface in Aluminum Reduction Cells.
Authors: Jha, Amit1,2 (AUTHOR) amit.jha@adityabirla.com, Ranjan, Avishek1 (AUTHOR), Karagadde, Shyamprasad1 (AUTHOR), Rajgire, Shanmukh2 (AUTHOR), Gupta, Amit2 (AUTHOR)
Source: JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Apr2026, Vol. 78 Issue 4, p3504-3523. 20p.
Subjects: Magnetohydrodynamic instabilities, Liquid-liquid interfaces, Hilbert-Huang transform, Aluminum smelting, Oscillations, Fourier transforms
Abstract: This study experimentally investigates the magnetohydrodynamic instability of the bath-metal interface in aluminum reduction cells. A key finding is the instability of a single bichromatic interfacial mode that is characterized by independent longitudinal and transverse wavenumbers, in contrast to previously reported coupled modes, which coexist to become unstable. Interface positions determined from the measurement of anode voltage oscillations are analyzed using Fourier and Hilbert-Huang transforms. Analysis of the reconstructed interface revealed both bichromatic and monochromatic modes. A close match is observed between the experimental mode frequencies and those predicted by the analytical relation reported in our earlier work. The frequencies of (3, 1), (1, 1), and (1, 0) modes come out to be 0.0332 s−1, 0.0780 s−1, and 0.00977 s−1, respectively, from the experiments and 0.0292 s−1, 0.0752 s−1, and 0.00803 s−1 from the analytical relations. Further investigation of interfacial oscillations revealed distinct instability characteristics under different perturbed conditions. The reduction in the height of the upper liquid by a maximum of 10 mm increases the oscillation frequency by a maximum of three times. An increase in oscillation frequency of bichromatic modes was also observed analytically. However, the local perturbation caused by the anode change resulted in the amplification of the low-frequency modes. [ABSTRACT FROM AUTHOR]
Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) 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.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 192462000
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Analysis of Multimodal Magnetohydrodynamic Instability at the Bath-Metal Interface in Aluminum Reduction Cells.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Jha%2C+Amit%22">Jha, Amit</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> amit.jha@adityabirla.com</i><br /><searchLink fieldCode="AR" term="%22Ranjan%2C+Avishek%22">Ranjan, Avishek</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Karagadde%2C+Shyamprasad%22">Karagadde, Shyamprasad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rajgire%2C+Shanmukh%22">Rajgire, Shanmukh</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gupta%2C+Amit%22">Gupta, Amit</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22JOM%3A+The+Journal+of+The+Minerals%2C+Metals+%26+Materials+Society+%28TMS%29%22">JOM: The Journal of The Minerals, Metals & Materials Society (TMS)</searchLink>. Apr2026, Vol. 78 Issue 4, p3504-3523. 20p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Magnetohydrodynamic+instabilities%22">Magnetohydrodynamic instabilities</searchLink><br /><searchLink fieldCode="DE" term="%22Liquid-liquid+interfaces%22">Liquid-liquid interfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Hilbert-Huang+transform%22">Hilbert-Huang transform</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+smelting%22">Aluminum smelting</searchLink><br /><searchLink fieldCode="DE" term="%22Oscillations%22">Oscillations</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transforms%22">Fourier transforms</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study experimentally investigates the magnetohydrodynamic instability of the bath-metal interface in aluminum reduction cells. A key finding is the instability of a single bichromatic interfacial mode that is characterized by independent longitudinal and transverse wavenumbers, in contrast to previously reported coupled modes, which coexist to become unstable. Interface positions determined from the measurement of anode voltage oscillations are analyzed using Fourier and Hilbert-Huang transforms. Analysis of the reconstructed interface revealed both bichromatic and monochromatic modes. A close match is observed between the experimental mode frequencies and those predicted by the analytical relation reported in our earlier work. The frequencies of (3, 1), (1, 1), and (1, 0) modes come out to be 0.0332 s−1, 0.0780 s−1, and 0.00977 s−1, respectively, from the experiments and 0.0292 s−1, 0.0752 s−1, and 0.00803 s−1 from the analytical relations. Further investigation of interfacial oscillations revealed distinct instability characteristics under different perturbed conditions. The reduction in the height of the upper liquid by a maximum of 10 mm increases the oscillation frequency by a maximum of three times. An increase in oscillation frequency of bichromatic modes was also observed analytically. However, the local perturbation caused by the anode change resulted in the amplification of the low-frequency modes. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=192462000
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s11837-026-08167-y
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 20
        StartPage: 3504
    Subjects:
      – SubjectFull: Magnetohydrodynamic instabilities
        Type: general
      – SubjectFull: Liquid-liquid interfaces
        Type: general
      – SubjectFull: Hilbert-Huang transform
        Type: general
      – SubjectFull: Aluminum smelting
        Type: general
      – SubjectFull: Oscillations
        Type: general
      – SubjectFull: Fourier transforms
        Type: general
    Titles:
      – TitleFull: Analysis of Multimodal Magnetohydrodynamic Instability at the Bath-Metal Interface in Aluminum Reduction Cells.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Jha, Amit
      – PersonEntity:
          Name:
            NameFull: Ranjan, Avishek
      – PersonEntity:
          Name:
            NameFull: Karagadde, Shyamprasad
      – PersonEntity:
          Name:
            NameFull: Rajgire, Shanmukh
      – PersonEntity:
          Name:
            NameFull: Gupta, Amit
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 10474838
          Numbering:
            – Type: volume
              Value: 78
            – Type: issue
              Value: 4
          Titles:
            – TitleFull: JOM: The Journal of The Minerals, Metals & Materials Society (TMS)
              Type: main
ResultId 1