Simulations of liquid crystals in Poiseuille flow
Lattice Boltzmann simulations are used to explore the behavior of liquid crystals subject to Poiseuille flow. In the nematic regime at low shear rates we find two possible steady-state configurations of the director field. The selected state depends on both the shear rate and the history of the samp...
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| Format: | Conference item |
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2001
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| _version_ | 1797105626147454976 |
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| author | Denniston, C Orlandini, E Yeomans, J |
| author_facet | Denniston, C Orlandini, E Yeomans, J |
| author_sort | Denniston, C |
| collection | OXFORD |
| description | Lattice Boltzmann simulations are used to explore the behavior of liquid crystals subject to Poiseuille flow. In the nematic regime at low shear rates we find two possible steady-state configurations of the director field. The selected state depends on both the shear rate and the history of the sample. For both director configurations there is clear evidence of shear thinning, a decrease in the viscosity with increasing shear rate. Moreover, at very high shear rates or when the order parameter is large, the system transforms to a 'log-rolling state' with boundary layers that may exhibit oscillatory behavior. (C) 2001 Elsevier Science Ltd. All rights reserved. |
| first_indexed | 2024-03-07T06:50:04Z |
| format | Conference item |
| id | oxford-uuid:fc3f6dee-e2b0-4887-b9e0-598b232098c8 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:50:04Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:fc3f6dee-e2b0-4887-b9e0-598b232098c82022-03-27T13:19:21ZSimulations of liquid crystals in Poiseuille flowConference itemhttp://purl.org/coar/resource_type/c_5794uuid:fc3f6dee-e2b0-4887-b9e0-598b232098c8Symplectic Elements at Oxford2001Denniston, COrlandini, EYeomans, JLattice Boltzmann simulations are used to explore the behavior of liquid crystals subject to Poiseuille flow. In the nematic regime at low shear rates we find two possible steady-state configurations of the director field. The selected state depends on both the shear rate and the history of the sample. For both director configurations there is clear evidence of shear thinning, a decrease in the viscosity with increasing shear rate. Moreover, at very high shear rates or when the order parameter is large, the system transforms to a 'log-rolling state' with boundary layers that may exhibit oscillatory behavior. (C) 2001 Elsevier Science Ltd. All rights reserved. |
| spellingShingle | Denniston, C Orlandini, E Yeomans, J Simulations of liquid crystals in Poiseuille flow |
| title | Simulations of liquid crystals in Poiseuille flow |
| title_full | Simulations of liquid crystals in Poiseuille flow |
| title_fullStr | Simulations of liquid crystals in Poiseuille flow |
| title_full_unstemmed | Simulations of liquid crystals in Poiseuille flow |
| title_short | Simulations of liquid crystals in Poiseuille flow |
| title_sort | simulations of liquid crystals in poiseuille flow |
| work_keys_str_mv | AT dennistonc simulationsofliquidcrystalsinpoiseuilleflow AT orlandinie simulationsofliquidcrystalsinpoiseuilleflow AT yeomansj simulationsofliquidcrystalsinpoiseuilleflow |