Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel

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Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel. / Chandragiri, Santhan; Doostmohammadi, Amin; Yeomans, Julia M.; Thampi, Sumesh P.

In: Physical Review Letters, Vol. 125, No. 14, 148002, 30.09.2020.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Chandragiri, S, Doostmohammadi, A, Yeomans, JM & Thampi, SP 2020, 'Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel', Physical Review Letters, vol. 125, no. 14, 148002. https://doi.org/10.1103/PhysRevLett.125.148002

APA

Chandragiri, S., Doostmohammadi, A., Yeomans, J. M., & Thampi, S. P. (2020). Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel. Physical Review Letters, 125(14), [148002]. https://doi.org/10.1103/PhysRevLett.125.148002

Vancouver

Chandragiri S, Doostmohammadi A, Yeomans JM, Thampi SP. Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel. Physical Review Letters. 2020 Sep 30;125(14). 148002. https://doi.org/10.1103/PhysRevLett.125.148002

Author

Chandragiri, Santhan ; Doostmohammadi, Amin ; Yeomans, Julia M. ; Thampi, Sumesh P. / Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel. In: Physical Review Letters. 2020 ; Vol. 125, No. 14.

Bibtex

@article{ba48add552924ec6a1e5433ce80ba9fe,
title = "Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel",
abstract = "We use active nematohydrodynamics to study the flow of an active fluid in a 3D microchannel, finding a transition between active turbulence and regimes where there is a net flow along the channel. We show that the net flow is only possible if the active nematic is flow aligning and that, in agreement with experiments, the appearance of the net flow depends on the aspect ratio of the channel cross section. We explain our results in terms of when the hydrodynamic screening due to the channel walls allows the emergence of vortex rolls across the channel.",
keywords = "MIGRATION, MOTION",
author = "Santhan Chandragiri and Amin Doostmohammadi and Yeomans, {Julia M.} and Thampi, {Sumesh P.}",
year = "2020",
month = "9",
day = "30",
doi = "10.1103/PhysRevLett.125.148002",
language = "English",
volume = "125",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "14",

}

RIS

TY - JOUR

T1 - Flow States and Transitions of an Active Nematic in a Three-Dimensional Channel

AU - Chandragiri, Santhan

AU - Doostmohammadi, Amin

AU - Yeomans, Julia M.

AU - Thampi, Sumesh P.

PY - 2020/9/30

Y1 - 2020/9/30

N2 - We use active nematohydrodynamics to study the flow of an active fluid in a 3D microchannel, finding a transition between active turbulence and regimes where there is a net flow along the channel. We show that the net flow is only possible if the active nematic is flow aligning and that, in agreement with experiments, the appearance of the net flow depends on the aspect ratio of the channel cross section. We explain our results in terms of when the hydrodynamic screening due to the channel walls allows the emergence of vortex rolls across the channel.

AB - We use active nematohydrodynamics to study the flow of an active fluid in a 3D microchannel, finding a transition between active turbulence and regimes where there is a net flow along the channel. We show that the net flow is only possible if the active nematic is flow aligning and that, in agreement with experiments, the appearance of the net flow depends on the aspect ratio of the channel cross section. We explain our results in terms of when the hydrodynamic screening due to the channel walls allows the emergence of vortex rolls across the channel.

KW - MIGRATION

KW - MOTION

U2 - 10.1103/PhysRevLett.125.148002

DO - 10.1103/PhysRevLett.125.148002

M3 - Journal article

C2 - 33064508

VL - 125

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 14

M1 - 148002

ER -

ID: 249903308