• Corpus ID: 244488469

On the fully coupled dynamics of flexible fibres dispersed in modulated turbulence

@inproceedings{Olivieri2021OnTF,
  title={On the fully coupled dynamics of flexible fibres dispersed in modulated turbulence},
  author={Stefano Olivieri and Andrea Mazzino and Marco E. Rosti},
  year={2021}
}
The present work investigates the mechanical behaviour of finite-size, elastic and inertial fibres freely moving in a homogeneous and isotropic turbulent flow at moderate Reynolds number. Four-way coupled, direct numerical simulations, based on a finite difference discretisation and the immersed boundary method, are performed to mutually couple the dynamics of fibres and fluid turbulence, allowing to account for the backreaction of the dispersed phase to the carrier flow. An extensive parametric study… 

References

SHOWING 1-10 OF 81 REFERENCES
Characterisation of flexible fibre deformations in turbulence
The transport of deformable objects by a turbulent flow is common in environmental sciences which are interested for instance by the dynamics of plankton in the ocean, and in industry, such as the
Simulation of flexible filaments in a uniform flow by the immersed boundary method
Measurements of the coupling between the tumbling of rods and the velocity gradient tensor in turbulence
Abstract We present simultaneous experimental measurements of the dynamics of anisotropic particles transported by a turbulent flow and the velocity gradient tensor of the flow surrounding them. We
Laboratory model for plastic fragmentation in the turbulent ocean
We study the fragmentation of deformable and brittle fibers in the inertial range of turbulence using laboratory experiments and numerical simulations. The fragmentation process is shown to be
Particle-Laden Turbulence: Progress and Perspectives
This review is motivated by the fast progress in our understanding of the physics of particle-laden turbulence in the last decade, partly due to the tremendous advances of measurement and simulation
Polymer scission in turbulent flows
Abstract Polymers in a turbulent flow are subject to intense strain, which can cause their scission and thereby limit the experimental study and application of phenomena such as turbulent drag
2020b Fluid dynamics of COVID
  • 2020
Turbulent Flows
2019Droplets in homogeneous shear turbulence
  • J. Fluid Mech
  • 2019
Stretching and Buckling of Small Elastic Fibers in Turbulence.
TLDR
Small flexible fibers in a turbulent flow are found to be as straight as stiff rods most of the time, but they might bend and buckle when they tumble and experience a strong enough local compression.
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