### Abstract

^{2}.

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

Pages (from-to) | 504-511 |

Number of pages | 8 |

Journal | Advanced Powder Technology |

Volume | 22 |

Issue number | 4 |

DOIs | |

Publication status | Published - 2011 |

MoE publication type | A1 Journal article-refereed |

Event | Chemeca 2010 - Adelaide, Australia Duration: 26 Sep 2010 → 29 Sep 2010 |

### Fingerprint

### Keywords

- Dense gas-particle two-phase turbulence
- downer
- frictional stress
- hydrodynamics simulation
- unified second-order-moment model

### Cite this

*Advanced Powder Technology*,

*22*(4), 504-511. https://doi.org/10.1016/j.apt.2010.07.003

}

*Advanced Powder Technology*, vol. 22, no. 4, pp. 504-511. https://doi.org/10.1016/j.apt.2010.07.003

**Hydrodynamic predictions of dense gas-particle flows using a second-order-moment frictional stress model.** / Liu, Y. (Corresponding Author); Liu, X.; Kallio, Sirpa; Zhou, L.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Hydrodynamic predictions of dense gas-particle flows using a second-order-moment frictional stress model

AU - Liu, Y.

AU - Liu, X.

AU - Kallio, Sirpa

AU - Zhou, L.

PY - 2011

Y1 - 2011

N2 - Based on the Eulerian–Eulerian two-fluid continuum approach, an improved unified second-order-moment two-phase turbulence model combining with the kinetic theory of particle collision frictional stress model is developed to simulate the dense gas–particle flows in downer, where the effective coefficient of restitution is incorporated into the particle–particle collision. The interaction term between gas and particle turbulence is fully taken into account by the transport equation of two-phase stress correlation. Hydrodynamics of high density particle flow, measured by Wang et al. [27] are predicted and the simulated results are in good agreement with experimental data. On the conditions of considering the realistic energy dissipation due to frictional stress, particle concentration and particle axial averaged velocity are closely the measured and they are better than without frictional stress model. Furthermore, the particle Reynolds stress is redistributed and the particle temperature is reduced. Effect of frictional stress leads to increase obviously the collision frequency at the outlet and inlet regions and the magnitude of frequency of particle collisions is 102.

AB - Based on the Eulerian–Eulerian two-fluid continuum approach, an improved unified second-order-moment two-phase turbulence model combining with the kinetic theory of particle collision frictional stress model is developed to simulate the dense gas–particle flows in downer, where the effective coefficient of restitution is incorporated into the particle–particle collision. The interaction term between gas and particle turbulence is fully taken into account by the transport equation of two-phase stress correlation. Hydrodynamics of high density particle flow, measured by Wang et al. [27] are predicted and the simulated results are in good agreement with experimental data. On the conditions of considering the realistic energy dissipation due to frictional stress, particle concentration and particle axial averaged velocity are closely the measured and they are better than without frictional stress model. Furthermore, the particle Reynolds stress is redistributed and the particle temperature is reduced. Effect of frictional stress leads to increase obviously the collision frequency at the outlet and inlet regions and the magnitude of frequency of particle collisions is 102.

KW - Dense gas-particle two-phase turbulence

KW - downer

KW - frictional stress

KW - hydrodynamics simulation

KW - unified second-order-moment model

U2 - 10.1016/j.apt.2010.07.003

DO - 10.1016/j.apt.2010.07.003

M3 - Article

VL - 22

SP - 504

EP - 511

JO - Advanced Powder Technology

JF - Advanced Powder Technology

SN - 0921-8831

IS - 4

ER -