The behavior of a magnetic filament in flow under the influence of an external magnetic field
| Autor: | Pedro A. Sánchez, Daniel Lüsebrink, Joan Cerdà, Sofia S. Kantorovich, Tomàs Sintes |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission, Govern de les Illes Balears, Austrian Science Fund, Ural Federal University, Russian Foundation for Basic Research, Ministry of Education and Science of the Russian Federation |
| Rok vydání: | 2016 |
| Předmět: |
Field (physics)
General Physics and Astronomy 02 engineering and technology 010402 general chemistry MAGNETISM 01 natural sciences Physics::Fluid Dynamics Protein filament COLLOIDAL PARTICLE POISEUILLE FLOW Fluid dynamics Physical and Theoretical Chemistry Superconductivity and magnetism EXTERNAL MAGNETIC FIELD Physics DEGREE OF ALIGNMENTS MAGNETIC FIELDS Mechanics 021001 nanoscience & nanotechnology Hagen–Poiseuille equation EXTERNAL FIELDS 0104 chemical sciences Magnetic field SHEAR FLOW TUMBLING MOTION Two-phase flow MAGNETIC FILAMENTS Magnetohydrodynamics MAGNETIC TORQUES 0210 nano-technology Shear flow FLOW OF FLUIDS |
| Zdroj: | J Chem Phys Journal of Chemical Physics Digital.CSIC. Repositorio Institucional del CSIC instname The Journal of Chemical Physics |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.4971860 |
| Popis: | We present an extensive numerical study of the behaviour of a filament made of ferromagnetic colloidal particles subjected to the simultaneous action of a fluid flow and a stationary external magnetic field perpendicular to the flow lines. We found that in the presence of a shear flow, the tumbling motion observed at zero field is strongly inhibited when the external magnetic field is applied. The field is able to stabilise the filament with a well defined degree of alignment that depends on the balance between hydrodynamic and magnetic torques. In addition, for a Poiseuille flow, it has been found that the initial position has a long lasting influence on the behaviour of the magnetic filament when the external field is applied. T.S. and J.J.C. acknowledge financial support from Ministerio de Economa y Competitividad and Fondo Europeo de Desarrollo Regional under Project No. FIS20015-63628-C2-2-R (MINECO/FEDER) and a grant awarded by the Conselleria d’Innovaci, Recerca i Turisme del Govern de les Illes Balears and the European Social Fund (ESF). This research has been partially supported by the Austrian Research Fund (FWF): START-Project No. Y 627-N27. The authors are grateful to the Ural Federal University stimulating programme. S.S.K. is supported by RFBR mol-a-ved No. 15-32-20549. The authors are grateful to the Ministry of Education and Science of the Russian Federation (Contract No. 02.A03.21.000, Project No. 3.12.2014/K) and the Marie-Sklodowska-Curie Project No. H2020-MSCA-ITN-2016, Grant No. 642774, COLLDENSE. |
| Databáze: | OpenAIRE |
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