Lattice Boltzmann simulations of droplet dynamics and break-up in generic time-dependent and turbulent flows
ORAL
Abstract
We study the behaviour of droplet break-up in generic time-dependent shear flows via a multicomponent Lattice Boltzmann algorithm. Our work can be seen as an extension to studies on the influence of inertia on droplet break-up (Y.Y. Renardy, V. Cristini, Phys. Fluids 13, 7 (2001)), whereas we deal with cases of time-dependent droplet break-up, which arise when the temporal rate of change of the shear intensity is of comparable size to the droplet relaxation time. This work is a continuation to a previous study on stable time-dependent droplet dynamics (F. Milan, M. Sbragaglia et al., Eur. Phys. J. E 41, 6 (2018)). Furthermore we investigate a more realistic model enabling the study of fully resolved dilute droplet suspension dynamics under the influence of turbulent fluctuations via multicomponent Lattice Boltzmann simulations, which we compare with previous studies containing non fully resolved droplets (L. Biferale, C. Meneveau, R. Verzicco, J. Fluid Mech. 754, 184 (2014)).
*This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 642069 and from the European Research Council under the European Community's Seventh Framework Program, ERC Grant Agreement No 339032.
–
Presenters
-
Felix Milan
- University of Rome Tor Vergata, Department of Physics & INFN, Eindhoven University of Technology