Onset of meso-scale turbulence in active nematics
Meso-scale turbulence is an innate phenomenon, distinct from inertial turbulence, that spontaneously occurs at low-Reynolds number in fluidized biological systems. This spatio-temporal disordered flow radically changes nutrient and molecular transport in living fluids and can strongly affect the col...
| Những tác giả chính: | , , , |
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| Định dạng: | Journal article |
| Được phát hành: |
Nature Publishing Group
2017
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| _version_ | 1826273603830677504 |
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| author | Doostmohammadi, A Shendruk, T Thijssen, K Yeomans, J |
| author_facet | Doostmohammadi, A Shendruk, T Thijssen, K Yeomans, J |
| author_sort | Doostmohammadi, A |
| collection | OXFORD |
| description | Meso-scale turbulence is an innate phenomenon, distinct from inertial turbulence, that spontaneously occurs at low-Reynolds number in fluidized biological systems. This spatio-temporal disordered flow radically changes nutrient and molecular transport in living fluids and can strongly affect the collective behaviour in prominent biological processes, including biofilm formation, morphogenesis and cancer invasion. Despite its crucial role in such physiological processes, understanding meso-scale turbulence and any relation to classical inertial turbulence remains obscure. Here, we show how the motion of active matter along a micro-channel transitions to mesoscale turbulence through the evolution of locally disordered patches (active puffs) from an ordered vortex-lattice flow state. We demonstrate that the stationary critical exponents of this transition to meso-scale turbulence in a channel coincide with the directed percolation universality class. This finding bridges our understanding of the onset of low-Reynolds number meso-scale turbulence and traditional scaleinvariant turbulence, therefore generalizing theories on the onset of turbulence in confinement to the distinct classes of incoherent flows observed in biological fluids. |
| first_indexed | 2024-03-06T22:30:43Z |
| format | Journal article |
| id | oxford-uuid:582df95f-c8f3-4361-870a-37562c8e9de5 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:30:43Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | oxford-uuid:582df95f-c8f3-4361-870a-37562c8e9de52022-03-26T17:01:41ZOnset of meso-scale turbulence in active nematicsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:582df95f-c8f3-4361-870a-37562c8e9de5Symplectic Elements at OxfordNature Publishing Group2017Doostmohammadi, AShendruk, TThijssen, KYeomans, JMeso-scale turbulence is an innate phenomenon, distinct from inertial turbulence, that spontaneously occurs at low-Reynolds number in fluidized biological systems. This spatio-temporal disordered flow radically changes nutrient and molecular transport in living fluids and can strongly affect the collective behaviour in prominent biological processes, including biofilm formation, morphogenesis and cancer invasion. Despite its crucial role in such physiological processes, understanding meso-scale turbulence and any relation to classical inertial turbulence remains obscure. Here, we show how the motion of active matter along a micro-channel transitions to mesoscale turbulence through the evolution of locally disordered patches (active puffs) from an ordered vortex-lattice flow state. We demonstrate that the stationary critical exponents of this transition to meso-scale turbulence in a channel coincide with the directed percolation universality class. This finding bridges our understanding of the onset of low-Reynolds number meso-scale turbulence and traditional scaleinvariant turbulence, therefore generalizing theories on the onset of turbulence in confinement to the distinct classes of incoherent flows observed in biological fluids. |
| spellingShingle | Doostmohammadi, A Shendruk, T Thijssen, K Yeomans, J Onset of meso-scale turbulence in active nematics |
| title | Onset of meso-scale turbulence in active nematics |
| title_full | Onset of meso-scale turbulence in active nematics |
| title_fullStr | Onset of meso-scale turbulence in active nematics |
| title_full_unstemmed | Onset of meso-scale turbulence in active nematics |
| title_short | Onset of meso-scale turbulence in active nematics |
| title_sort | onset of meso scale turbulence in active nematics |
| work_keys_str_mv | AT doostmohammadia onsetofmesoscaleturbulenceinactivenematics AT shendrukt onsetofmesoscaleturbulenceinactivenematics AT thijssenk onsetofmesoscaleturbulenceinactivenematics AT yeomansj onsetofmesoscaleturbulenceinactivenematics |