TY - GEN
T1 - CFD simulation of hydrodynamics of three-dimensional circulating fluidized beds with EMMS model
AU - Tu, Q.
AU - Wang, H. G.
AU - Zhou, H.
AU - Wang, W.
N1 - Publisher Copyright:
© Springer Science+Business Media Singapore 2017.
PY - 2017
Y1 - 2017
N2 - Unlike the conventional drag models which were developed on the basis of experiments with homogeneous system, energy minimization multi-scale (EMMS) drag model takes into account the heterogeneous structure inside the gas-solid flow. In this paper, the transient three-dimensional full-loop gas-solid flow in a pilot scale circulating fluidized bed (CFB) with six cyclones was simulated in the computational particle fluid dynamics (CPFD) method, based on EMMS. Particle volume fraction distribution, time averaged pressure profile, and averaged particle vertical velocity were analyzed and presented. The results show that under the simulation condition, in the dense region, particles agglomerate and form clusters; pressure drop evaluation of the dense region is still far away from the experimental data but better than using Wen-Yu model; vertical velocity profile shows core-annulus structure.
AB - Unlike the conventional drag models which were developed on the basis of experiments with homogeneous system, energy minimization multi-scale (EMMS) drag model takes into account the heterogeneous structure inside the gas-solid flow. In this paper, the transient three-dimensional full-loop gas-solid flow in a pilot scale circulating fluidized bed (CFB) with six cyclones was simulated in the computational particle fluid dynamics (CPFD) method, based on EMMS. Particle volume fraction distribution, time averaged pressure profile, and averaged particle vertical velocity were analyzed and presented. The results show that under the simulation condition, in the dense region, particles agglomerate and form clusters; pressure drop evaluation of the dense region is still far away from the experimental data but better than using Wen-Yu model; vertical velocity profile shows core-annulus structure.
UR - https://www.scopus.com/pages/publications/85007319594
U2 - 10.1007/978-981-10-1926-5_106
DO - 10.1007/978-981-10-1926-5_106
M3 - 会议稿件
AN - SCOPUS:85007319594
SN - 9789811019258
T3 - Springer Proceedings in Physics
SP - 1013
EP - 1021
BT - Proceedings of the 7th International Conference on Discrete Element Methods
A2 - Li, Xikui
A2 - Feng, Yuntian
A2 - Mustoe, Graham
PB - Springer Science and Business Media, LLC
T2 - 7th International Conference on Discrete Element Methods, DEM7 2016
Y2 - 1 August 2016 through 4 August 2016
ER -