天津大学学报（英文版）
天津大學學報（英文版）
천진대학학보（영문판）
TRANSACTIONS OF TIANJIN UNIVERSITY
2015年
3期
250-258
,共9页
乔胜超%王日杰%杨晓霞%闫越飞
喬勝超%王日傑%楊曉霞%閆越飛
교성초%왕일걸%양효하%염월비
CFD simulation%PBT%stirred tank%flow field%pumping capacity
This work focused on exploring a computational fluid dynamics(CFD)method to predict the macro-mixing characteristics including the mean flow field and impeller capacity for a 45° down-pumping pitched blade tur-bine(PBT)in stirred tanks. Firstly, the three typical mean flow fields were investigated by virtue of three components of liquid velocity. Then the effects of impeller diameter(D)and off-bottom clearance(C)on both the mean flow field and three global macro-mixing parameters concerning impeller capacity were studied in detail. The changes of flow patterns with increasing C/D were predicted from these effects. The simulation results are consistent with the experi-mental results in published literature.
