Flow states and transitions of an active nematic in a three-dimensional channel
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 agreemen...
| Hoofdauteurs: | , , , |
|---|---|
| Formaat: | Journal article |
| Taal: | English |
| Gepubliceerd in: |
American Physical Society
2020
|
| _version_ | 1826266824210120704 |
|---|---|
| author | Chandragiri, S Doostmohammadi, A Yeomans, JM Thampi, SP |
| author_facet | Chandragiri, S Doostmohammadi, A Yeomans, JM Thampi, SP |
| author_sort | Chandragiri, S |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-06T20:44:49Z |
| format | Journal article |
| id | oxford-uuid:358521e9-71f6-40cf-b2e7-3acb7c34b933 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:44:49Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:358521e9-71f6-40cf-b2e7-3acb7c34b9332022-03-26T13:32:29ZFlow states and transitions of an active nematic in a three-dimensional channelJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:358521e9-71f6-40cf-b2e7-3acb7c34b933EnglishSymplectic ElementsAmerican Physical Society2020Chandragiri, SDoostmohammadi, AYeomans, JMThampi, SPWe 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. |
| spellingShingle | Chandragiri, S Doostmohammadi, A Yeomans, JM Thampi, SP Flow states and transitions of an active nematic in a three-dimensional channel |
| title | Flow states and transitions of an active nematic in a three-dimensional channel |
| title_full | Flow states and transitions of an active nematic in a three-dimensional channel |
| title_fullStr | Flow states and transitions of an active nematic in a three-dimensional channel |
| title_full_unstemmed | Flow states and transitions of an active nematic in a three-dimensional channel |
| title_short | Flow states and transitions of an active nematic in a three-dimensional channel |
| title_sort | flow states and transitions of an active nematic in a three dimensional channel |
| work_keys_str_mv | AT chandragiris flowstatesandtransitionsofanactivenematicinathreedimensionalchannel AT doostmohammadia flowstatesandtransitionsofanactivenematicinathreedimensionalchannel AT yeomansjm flowstatesandtransitionsofanactivenematicinathreedimensionalchannel AT thampisp flowstatesandtransitionsofanactivenematicinathreedimensionalchannel |