TY - JOUR
T1 - A hybrid multiphase model accounting for particle agglomeration for coarse-grid simulation of dense solid flow inside large-scale cyclones
AU - Mirzaei, Mohamadali
AU - Jensen, Peter Arendt
AU - Nakhaei, Mohammadhadi
AU - Wu, Hao
AU - Zakrzewski, Sam
AU - Zhou, Haosheng
AU - Lin, Weigang
PY - 2022
Y1 - 2022
N2 - A hybrid multiphase model (Dense Discrete Phase Model, DDPM) coupled with an agglomeration model and a sub-grid drag model was developed for simulation of industrial-scale cyclones with high solid loading. The model is validated by experimental results of pressure drop and separation efficiency from a pilot-scale cyclone with a diameter of 1.6 m. Key trends such as improvement in separation efficiency and reduction in pressure drop of cyclone due to an increase in particle load are well captured by the model. It is concluded that including the agglomeration model is crucial in particular in cases involving very fine particles (d < 15 μm) for accurate predictions of pressure drop and separation efficiency, while using the sub-grid drag modification improves the prediction of separation efficiency.
AB - A hybrid multiphase model (Dense Discrete Phase Model, DDPM) coupled with an agglomeration model and a sub-grid drag model was developed for simulation of industrial-scale cyclones with high solid loading. The model is validated by experimental results of pressure drop and separation efficiency from a pilot-scale cyclone with a diameter of 1.6 m. Key trends such as improvement in separation efficiency and reduction in pressure drop of cyclone due to an increase in particle load are well captured by the model. It is concluded that including the agglomeration model is crucial in particular in cases involving very fine particles (d < 15 μm) for accurate predictions of pressure drop and separation efficiency, while using the sub-grid drag modification improves the prediction of separation efficiency.
KW - Dense dispersed gas-solid flow
KW - Dense Discrete Phase Model (DDPM)
KW - Agglomeration modeling
KW - Sub-grid drag model
KW - Industrial-scale cyclone
U2 - 10.1016/j.powtec.2022.117186
DO - 10.1016/j.powtec.2022.117186
M3 - Journal article
SN - 0032-5910
VL - 399
JO - Powder Technology
JF - Powder Technology
M1 - 117186
ER -