## Abstract

Flows of solid-liquid suspensions span a multi-dimensional parameter space, with coordinates such as the Stokes number, the solids volume fraction, the density ratio, and Reynolds numbers. We are interested in systems with appreciable inertia effects - i.e., non-zero Stokes and Reynolds numbers - having density ratios of the order of one (typical for solid-liquid systems) and solids volume fractions of at least 0.1. Additional effects include strongly inhomogeneous solids distributions, non-Newtonian liquids, and sticky particles that tend to aggregate. This leads to a rich spectrum of interactions at the scale of individual particles. To reveal these we perform direct simulations of collections of a few thousand of particles carried by a liquid flow with resolution of the solid-liquid interfaces. For this we use the lattice-Boltzmann method supplemented with an immersed boundary approach.

Original language | English |
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Pages (from-to) | 103-111 |

Number of pages | 9 |

Journal | Progress in computational fluid dynamics |

Volume | 12 |

Issue number | 2-3 |

DOIs | |

Publication status | Published - 22 Jun 2012 |

## Keywords

- multiphase flow
- suspensions
- direct numerical simulation
- LBM
- lattice-Boltzmann method
- immersed boundary method
- mesoscopic modelling
- particle-turbulence interaction
- aggregation
- collision modelling
- Lattice-Boltzmann simulations
- homogeneous turbulence
- numerical simulations
- isotropic turbulence
- flow
- equation
- breakage
- dynamics
- fluids