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An experimental study investigating the inertial-wave field accompanying vortex rings translating through a rotating fluid.

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Title: An experimental study investigating the inertial-wave field accompanying vortex rings translating through a rotating fluid.
Authors: Jackson, Oliver C.1, Thomas, Peter J.1 p.j.thomas@warwick.ac.uk
Source: Journal of Fluid Mechanics. 2/25/2026, Vol. 1029, p1-25. 25p.
Subjects: Rotating fluid, Coriolis force, Particle image velocimetry, Waves (Physics), Dispersion relations, Fluid dynamics, Kinetic energy
Abstract: Results of an experimental study investigating issues of Coriolis effects on the fluid dynamics associated with vortex rings propagating through a rotating fluid are presented. The vortex rings are generated at the top of a large, water-filled rotating tank and they propagate downwards along the axis of rotation. The motion and the decay of the rings in a rotating fluid are expected to be accompanied by an inertial-wave field being established in the fluid surrounding the rings. However, the existence of this inertial-wave field had previously never been verified experimentally. Particle image velocimetry measurements were performed with the goal of demonstrating the existence of the inertial-wave field. Datasets were processed to extract individual inertial-wave modes and, for the first time, experimentally construct the dispersion relation for the inertial waves associated with vortex rings. For rotation rates when Coriolis forces dominate the dynamics, the experimental data are found to be in very good agreement with the well-established theoretical dispersion relation for inertial waves. The generation of inertial waves implies that kinetic energy is radiated away from the vortex rings. First results relating to the redistribution process of the kinetic energy are briefly discussed. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press 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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DbLabel: Engineering Source
An: 192858512
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: An experimental study investigating the inertial-wave field accompanying vortex rings translating through a rotating fluid.
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  Data: <searchLink fieldCode="AR" term="%22Jackson%2C+Oliver+C%2E%22">Jackson, Oliver C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Thomas%2C+Peter+J%2E%22">Thomas, Peter J.</searchLink><relatesTo>1</relatesTo><i> p.j.thomas@warwick.ac.uk</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Fluid+Mechanics%22">Journal of Fluid Mechanics</searchLink>. 2/25/2026, Vol. 1029, p1-25. 25p.
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  Data: <searchLink fieldCode="DE" term="%22Rotating+fluid%22">Rotating fluid</searchLink><br /><searchLink fieldCode="DE" term="%22Coriolis+force%22">Coriolis force</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+image+velocimetry%22">Particle image velocimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Waves+%28Physics%29%22">Waves (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Dispersion+relations%22">Dispersion relations</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Kinetic+energy%22">Kinetic energy</searchLink>
– Name: Abstract
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  Data: Results of an experimental study investigating issues of Coriolis effects on the fluid dynamics associated with vortex rings propagating through a rotating fluid are presented. The vortex rings are generated at the top of a large, water-filled rotating tank and they propagate downwards along the axis of rotation. The motion and the decay of the rings in a rotating fluid are expected to be accompanied by an inertial-wave field being established in the fluid surrounding the rings. However, the existence of this inertial-wave field had previously never been verified experimentally. Particle image velocimetry measurements were performed with the goal of demonstrating the existence of the inertial-wave field. Datasets were processed to extract individual inertial-wave modes and, for the first time, experimentally construct the dispersion relation for the inertial waves associated with vortex rings. For rotation rates when Coriolis forces dominate the dynamics, the experimental data are found to be in very good agreement with the well-established theoretical dispersion relation for inertial waves. The generation of inertial waves implies that kinetic energy is radiated away from the vortex rings. First results relating to the redistribution process of the kinetic energy are briefly discussed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press 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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      – Type: doi
        Value: 10.1017/jfm.2026.11199
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      – Code: eng
        Text: English
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        PageCount: 25
        StartPage: 1
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      – SubjectFull: Rotating fluid
        Type: general
      – SubjectFull: Coriolis force
        Type: general
      – SubjectFull: Particle image velocimetry
        Type: general
      – SubjectFull: Waves (Physics)
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      – SubjectFull: Dispersion relations
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      – SubjectFull: Fluid dynamics
        Type: general
      – SubjectFull: Kinetic energy
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              M: 02
              Text: 2/25/2026
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              Y: 2026
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