---
_id: '1589'
abstract:
- lang: eng
  text: We investigate the dynamics of ferrofluidic wavy vortex flows in the counter-rotating
    Taylor-Couette system, with a focus on wavy flows with a mixture of the dominant
    azimuthal modes. Without external magnetic field flows are stable and pro-grade
    with respect to the rotation of the inner cylinder. More complex behaviors can
    arise when an axial or a transverse magnetic field is applied. Depending on the
    direction and strength of the field, multi-stable wavy states and bifurcations
    can occur. We uncover the phenomenon of flow pattern reversal as the strength
    of the magnetic field is increased through a critical value. In between the regimes
    of pro-grade and retrograde flow rotations, standing waves with zero angular velocities
    can emerge. A striking finding is that, under a transverse magnetic field, a second
    reversal in the flow pattern direction can occur, where the flow pattern evolves
    into pro-grade rotation again from a retrograde state. Flow reversal is relevant
    to intriguing phenomena in nature such as geomagnetic reversal. Our results suggest
    that, in ferrofluids, flow pattern reversal can be induced by varying a magnetic
    field in a controlled manner, which can be realized in laboratory experiments
    with potential applications in the development of modern fluid devices.
article_number: '18589'
article_processing_charge: No
article_type: original
author:
- first_name: Sebastian
  full_name: Altmeyer, Sebastian
  id: 2EE67FDC-F248-11E8-B48F-1D18A9856A87
  last_name: Altmeyer
  orcid: 0000-0001-5964-0203
- first_name: Younghae
  full_name: Do, Younghae
  last_name: Do
- first_name: Ying
  full_name: Lai, Ying
  last_name: Lai
citation:
  ama: Altmeyer S, Do Y, Lai Y. Magnetic field induced flow pattern reversal in a
    ferrofluidic Taylor-Couette system. <i>Scientific Reports</i>. 2015;5. doi:<a
    href="https://doi.org/10.1038/srep18589">10.1038/srep18589</a>
  apa: Altmeyer, S., Do, Y., &#38; Lai, Y. (2015). Magnetic field induced flow pattern
    reversal in a ferrofluidic Taylor-Couette system. <i>Scientific Reports</i>. Nature
    Publishing Group. <a href="https://doi.org/10.1038/srep18589">https://doi.org/10.1038/srep18589</a>
  chicago: Altmeyer, Sebastian, Younghae Do, and Ying Lai. “Magnetic Field Induced
    Flow Pattern Reversal in a Ferrofluidic Taylor-Couette System.” <i>Scientific
    Reports</i>. Nature Publishing Group, 2015. <a href="https://doi.org/10.1038/srep18589">https://doi.org/10.1038/srep18589</a>.
  ieee: S. Altmeyer, Y. Do, and Y. Lai, “Magnetic field induced flow pattern reversal
    in a ferrofluidic Taylor-Couette system,” <i>Scientific Reports</i>, vol. 5. Nature
    Publishing Group, 2015.
  ista: Altmeyer S, Do Y, Lai Y. 2015. Magnetic field induced flow pattern reversal
    in a ferrofluidic Taylor-Couette system. Scientific Reports. 5, 18589.
  mla: Altmeyer, Sebastian, et al. “Magnetic Field Induced Flow Pattern Reversal in
    a Ferrofluidic Taylor-Couette System.” <i>Scientific Reports</i>, vol. 5, 18589,
    Nature Publishing Group, 2015, doi:<a href="https://doi.org/10.1038/srep18589">10.1038/srep18589</a>.
  short: S. Altmeyer, Y. Do, Y. Lai, Scientific Reports 5 (2015).
date_created: 2018-12-11T11:52:53Z
date_published: 2015-12-21T00:00:00Z
date_updated: 2025-09-23T09:32:24Z
day: '21'
ddc:
- '530'
- '540'
department:
- _id: BjHo
doi: 10.1038/srep18589
external_id:
  isi:
  - '000367075500002'
file:
- access_level: open_access
  checksum: 927e151674347661ce36eae2818dafdc
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:13:49Z
  date_updated: 2020-07-14T12:45:03Z
  file_id: '5036'
  file_name: IST-2016-472-v1+1_srep18589.pdf
  file_size: 2771236
  relation: main_file
file_date_updated: 2020-07-14T12:45:03Z
has_accepted_license: '1'
intvolume: '         5'
isi: 1
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
publication: Scientific Reports
publication_status: published
publisher: Nature Publishing Group
publist_id: '5582'
pubrep_id: '472'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Magnetic field induced flow pattern reversal in a ferrofluidic Taylor-Couette
  system
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 5
year: '2015'
...