Optimization Design and Internal Flow Field Study of Open-Design Vortex Pump

Table 2

Mesh independent analysis.

Mesh software	ICEM
Grid size	4.5	5.0	5.5	6.0
Grid elements	1636421	1383790	986575	733659
Efficiency η (%)	46.342	46.339	45.725	45.236
H (m)	23.541	23.536	23.203	22.924