Abstract
Direct numerical simulations (DNS) of liquid-liquid dispersions in a three-dimensional periodic domain have been performed by means of the lattice-Boltzmann method. The dispersion was agitated by a random force field such as to produce isotropic turbulence. The turbulence levels and its history were based on a fluid parcel in a turbulently stirred tank traversing the impeller swept region. The DNS provide detailed insight in the coalescence and break-up events brought about by the turbulent flow, the evolution of the drop size distribution in time, and the interaction of the small-scale flow and the droplets as witnessed in terms of the spectral characteristics of the turbulence.
| Original language | English |
|---|---|
| Pages (from-to) | 697-702 |
| Number of pages | 6 |
| Journal | Chemical Engineering Research & Design |
| Volume | 85 |
| Issue number | 5 |
| Early online date | 13 Mar 2006 |
| DOIs | |
| Publication status | Published - 2007 |
| Event | 12th European Conference on Mixing - Bologna, Italy Duration: 27 Jun 2006 → 30 Jun 2006 |
Keywords
- liquid-liquid dispersion
- break-up
- coalescence
- turbulence
- lattice-boltzmann
- numerical simulation
- Rayleigh-Taylor instability
- homogeneous turbulence
- shear flows
- Boltzmann