dc.contributor.author | Jiang, Fengjian | |
dc.contributor.author | Lihao, Zhao | |
dc.contributor.author | Andersson, Helge Ingolf | |
dc.contributor.author | Gustavsson, Kristian | |
dc.contributor.author | Pumir, Alain | |
dc.contributor.author | Mehlig, Bernhard | |
dc.date.accessioned | 2022-09-19T12:12:44Z | |
dc.date.available | 2022-09-19T12:12:44Z | |
dc.date.created | 2021-02-02T22:54:13Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Physical Review Fluids. 2021, 6 . | |
dc.identifier.issn | 2469-990X | |
dc.identifier.uri | https://hdl.handle.net/11250/3018900 | |
dc.description.abstract | How anisotropic particles rotate and orient in a flow depends on the hydrodynamic torque they experience. Here we compute the torque acting on a small spheroid in a uniform flow by numerically solving the Navier-Stokes equations. Particle shape is varied from oblate (aspect ratio λ = 1 / 6 ) to prolate ( λ = 6 ) , and we consider low and moderate particle Reynolds numbers ( Re ≤ 50 ) . We demonstrate that the angular dependence of the torque, predicted theoretically for small particle Reynolds numbers, remains qualitatively correct for Reynolds numbers up to Re ∼ 10 . The amplitude of the torque, however, is smaller than the theoretical prediction, the more so as Re increases. For Re larger than 10, the flow past oblate spheroids acquires a more complicated structure, resulting in systematic deviations from the theoretical predictions. Overall, our numerical results provide a justification of recent theories for the orientation statistics of ice crystals settling in a turbulent flow. | |
dc.language.iso | eng | |
dc.publisher | American Physical Society | |
dc.rights | Navngivelse 4.0 Internasjonal | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | |
dc.title | Inertial torque on a small spheroid in a stationary uniform flow | |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.description.version | publishedVersion | |
dc.source.pagenumber | 12 | |
dc.source.volume | 6 | |
dc.source.journal | Physical Review Fluids | |
dc.identifier.doi | 10.1103/PhysRevFluids.6.024302 | |
dc.identifier.cristin | 1886114 | |
dc.relation.project | Notur/NorStore: nn9191k | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |