DBS drag model for gas?liquid interaction, and three drag models for liquid?solid interaction including Gidaspow model, Gidaspow?Brucato model and Schiller?Naumann model were used to simulate slurry bubble columns without considering the direct interaction between gas and solid. The simulation and experimental results of axial solid holdup with different particle sizes were compared. The results showed that different liquid?solid drag models had minor influence on the prediction of gas holdup. The combination of DBS drag model and Schiller?Naumann model had a better prediction for the systems of larger particle size (140 ?m) at lower gas velocity. The solids holdup decreased with increasing the column height, whereas other models fail to predict the axial solids holdup distribution. These different liquid?solid drag models performed well for the systems of smaller particle size (35 ?m).
Shuzhou SHI Rongtao ZHOU Ning YANG Jianfei SONG
. Simulation of Axial Solid Holdup in Slurry Bubble Columns[J]. The Chinese Journal of Process Engineering, 2018
, 18(2)
: 258
-264
.
DOI: 10.12034/j.issn.1009-606X.217238
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