Physical Simulation of Bubble Behaviors and Optimization …
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Table 2 Experimental design
Variable
Shape of
agitator
Stirring speed
(r/min)
Eccentric
stirring
Inlet gas flow
(m 3 /h)
Height of
agitator
Shape of agitator CBY
600
0.4
0.12
3
SSB
SSB-D
Stirring speed
(r/min)
SSB-D
400
0.4
0.12
3
500
600
700
Eccentric
stirring
SSB-D
600
0
0.12
3
0.2
0.4
Inlet gas flow
(m 3 /h)
SSB-D
600
0.4
0.06
3
0.09
0.12
0.15
Height of
agitator
SSB-D
600
0.4
0.12
2
3
4
Results and Discussion
Effects of Agitators
When the stirring speed is 600 r/min, the inlet gas flow is 0.12 m
3 /h, eccentric stirring
is 0.4, and the height of agitator is 3 cm, inquiry into effects of three agitators on the
micro-bubble.
It can be seen from Fig. 5 that when the CBY agitator is used, even though the
eccentric stirring is 0.4, a strong eddy current is still generated and a large vortex is
(a) CBY
(b) SSB
(c) SSB-D
Fig. 5 Static images of bubbles with different agitators