### Abstract

Original language | English |
---|---|

Article number | e16594 |

Journal | AIChE Journal |

Volume | 5 |

Issue number | 6 |

Early online date | 30 Mar 2019 |

DOIs | |

Publication status | Published - Jun 2019 |

### Fingerprint

### Keywords

- solids suspension
- particle-resolved simulations
- non-spherical particles
- cylinders
- lattice-Boltzmann method
- liquid fluidization
- nonspherical particles
- LATTICE-BOLTZMANN SIMULATIONS
- BED
- NONSPHERICAL PARTICLES
- FLOW
- DRAG
- FLUCTUATIONS
- DENSE SUSPENSIONS

### ASJC Scopus subject areas

- Chemical Engineering(all)
- Biotechnology
- Environmental Engineering

### Cite this

**Liquid fluidization with cylindrical particles : highly resolved simulations.** / Derksen, Jos J. (Corresponding Author).

Research output: Contribution to journal › Article

*AIChE Journal*, vol. 5, no. 6, e16594. https://doi.org/10.1002/aic.16594

}

TY - JOUR

T1 - Liquid fluidization with cylindrical particles

T2 - highly resolved simulations

AU - Derksen, Jos J.

PY - 2019/6

Y1 - 2019/6

N2 - We perform three-dimensional, time-dependent simulations of dense, fluidized suspensions of solid cylindrical particles in a Newtonian liquid in fully periodic domains. The resolution of the flow field is an order of magnitude finer than the diameter of the cylindrical particles. At their surfaces no-slip conditions are applied through an immersed boundary method (IBM), coupled to the lattice-Boltzmann method that is used as the fluid flow solver. The marker points of the IBM are also used to detect and perform collisions between the cylinders. With these particle-resolved simulations, we study the effects of the aspect ratio of the cylinders and the solids volume fraction on the superficial slip velocity between fluid and solids, on the solids velocity fluctuations, as well as on the orientation of the cylinders. The aspect ratio (length over diameter of the cylinders) ranges from 0.5 to 4, the solids volume fraction goes up to 0.48. Reynolds numbers based on average settling velocity are of the order of 1 to 10. At constant Archimedes number, we observe only minor sensitivities of the settling Reynolds number on the aspect ratio.

AB - We perform three-dimensional, time-dependent simulations of dense, fluidized suspensions of solid cylindrical particles in a Newtonian liquid in fully periodic domains. The resolution of the flow field is an order of magnitude finer than the diameter of the cylindrical particles. At their surfaces no-slip conditions are applied through an immersed boundary method (IBM), coupled to the lattice-Boltzmann method that is used as the fluid flow solver. The marker points of the IBM are also used to detect and perform collisions between the cylinders. With these particle-resolved simulations, we study the effects of the aspect ratio of the cylinders and the solids volume fraction on the superficial slip velocity between fluid and solids, on the solids velocity fluctuations, as well as on the orientation of the cylinders. The aspect ratio (length over diameter of the cylinders) ranges from 0.5 to 4, the solids volume fraction goes up to 0.48. Reynolds numbers based on average settling velocity are of the order of 1 to 10. At constant Archimedes number, we observe only minor sensitivities of the settling Reynolds number on the aspect ratio.

KW - solids suspension

KW - particle-resolved simulations

KW - non-spherical particles

KW - cylinders

KW - lattice-Boltzmann method

KW - liquid fluidization

KW - nonspherical particles

KW - LATTICE-BOLTZMANN SIMULATIONS

KW - BED

KW - NONSPHERICAL PARTICLES

KW - FLOW

KW - DRAG

KW - FLUCTUATIONS

KW - DENSE SUSPENSIONS

UR - http://www.scopus.com/inward/record.url?scp=85063682994&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/liquid-fluidization-cylindrical-particles-highly-resolved-simulations

U2 - 10.1002/aic.16594

DO - 10.1002/aic.16594

M3 - Article

VL - 5

JO - AIChE Journal

JF - AIChE Journal

SN - 0001-1541

IS - 6

M1 - e16594

ER -