Study on Optimization of Pump Shaft Transmission System of Plastic Centrifugal Pump

Table 8

Results of impeller grid division.

Name	First group	Second group	Third group	Fourth group	Fifth group	Sixth group
Global grid-scale factor	2	2	1	1	1	1
Control the maximum size of the model	2	1	4	8	8	8
Layer number of boundary layer refinement	5	5	5	5	2	10
Grid quality	0.15	0.2	0.23	0.23	0.23	0.25
Grid quantity	133565	984290	133527	69835	44149	125397