### 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 |
---|---|

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

### Cite this

**Dense suspensions : solid-liquid interactions at the particle scale.** / Derksen, J. J.

Research output: Contribution to journal › Article

*Progress in computational fluid dynamics*, vol. 12, no. 2-3, pp. 103-111. https://doi.org/10.1504/PCFD.2012.047453

}

TY - JOUR

T1 - Dense suspensions

T2 - solid-liquid interactions at the particle scale

AU - Derksen, J. J.

PY - 2012/6/22

Y1 - 2012/6/22

N2 - 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.

AB - 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.

KW - multiphase flow

KW - suspensions

KW - direct numerical simulation

KW - LBM

KW - lattice-Boltzmann method

KW - immersed boundary method

KW - mesoscopic modelling

KW - particle-turbulence interaction

KW - aggregation

KW - collision modelling

KW - Lattice-Boltzmann simulations

KW - homogeneous turbulence

KW - numerical simulations

KW - isotropic turbulence

KW - flow

KW - equation

KW - breakage

KW - dynamics

KW - fluids

U2 - 10.1504/PCFD.2012.047453

DO - 10.1504/PCFD.2012.047453

M3 - Article

VL - 12

SP - 103

EP - 111

JO - Progress in computational fluid dynamics

JF - Progress in computational fluid dynamics

SN - 1468-4349

IS - 2-3

ER -