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Published February 1993 | Published
Journal Article Open

Dynamics of laminar magnetic vortex rings


Preliminary results are reported for an experiment studying the dynamics of laminar magnetic vortex rings. These are formed through injection of a magnetic fluid (ferrofluid) into a nonmagnetic carrier liquid. An external magnetic field is used to strain the magnetic cores of the propagating rings without an additional external flow and away from solid boundaries. Varying field‐dependent growth rates and the development of field‐induced instabilities can be observed. Results are presented from an automated analysis of digitally recorded video sequences, resulting in time records of the evolving ring radii.

Additional Information

© 1993 American Institute of Physics. Received 23 June 1992; accepted 1 October 1992. This research was supported in part by DARPA/ ACMP URI Grant No. N00014-86-K-0758.

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August 20, 2023
August 20, 2023