---
_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_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. Scientific Reports. 2015;5. doi:10.1038/srep18589
apa: Altmeyer, S., Do, Y., & Lai, Y. (2015). Magnetic field induced flow pattern
reversal in a ferrofluidic Taylor-Couette system. Scientific Reports. Nature
Publishing Group. https://doi.org/10.1038/srep18589
chicago: Altmeyer, Sebastian, Younghae Do, and Ying Lai. “Magnetic Field Induced
Flow Pattern Reversal in a Ferrofluidic Taylor-Couette System.” Scientific
Reports. Nature Publishing Group, 2015. https://doi.org/10.1038/srep18589.
ieee: S. Altmeyer, Y. Do, and Y. Lai, “Magnetic field induced flow pattern reversal
in a ferrofluidic Taylor-Couette system,” Scientific Reports, 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.” Scientific Reports, vol. 5, 18589,
Nature Publishing Group, 2015, doi:10.1038/srep18589.
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: 2021-01-12T06:51:48Z
day: '21'
ddc:
- '530'
- '540'
department:
- _id: BjHo
doi: 10.1038/srep18589
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'
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2015'
...