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Deformability of discs in turbulence
- Source :
- Journal of Fluid Mechanics, Journal of Fluid Mechanics, 2022, 933, pp.A3. ⟨10.1017/jfm.2021.1035⟩, Journal of Fluid Mechanics, Cambridge University Press (CUP), 2022, 933, pp.A3. ⟨10.1017/jfm.2021.1035⟩
- Publication Year :
- 2022
- Publisher :
- HAL CCSD, 2022.
-
Abstract
- International audience; The aim of this study is to investigate experimentally the transition from a rigid regime to a deformed regime for flexible discs freely advected in turbulent flows. For a given disc, the amplitude of the deformation is expected to increase when its bending modulus decreases or when the turbulent kinetic energy increases. To quantify this qualitative argument, experiments are performed where the deformation of flexible discs is measured using three cameras. The amplitude of the deformation has been characterised by the eigenvalues of the moment of inertia tensor. Experimental results exhibit a transition from a rigid regime to a deformed regime that depends on the size, the density and the flexibility of the disc and the turbulent kinetic energy. The modelling of this transition is a generalisation and an extension of the previous models used to characterise the deformation of flexible fibres in turbulent flows.
- Subjects :
- Physics::Fluid Dynamics
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Mechanics of Materials
Mechanical Engineering
0103 physical sciences
MSC: 76F99, 76F25, 76-05
010306 general physics
Condensed Matter Physics
01 natural sciences
010305 fluids & plasmas
Subjects
Details
- Language :
- English
- ISSN :
- 00221120 and 14697645
- Database :
- OpenAIRE
- Journal :
- Journal of Fluid Mechanics, Journal of Fluid Mechanics, 2022, 933, pp.A3. ⟨10.1017/jfm.2021.1035⟩, Journal of Fluid Mechanics, Cambridge University Press (CUP), 2022, 933, pp.A3. ⟨10.1017/jfm.2021.1035⟩
- Accession number :
- edsair.doi.dedup.....9da317d3ec4e50d76d4eccd3af3cc237