Flow Pattern Analysis and Performance Improvement of Regenerative Flow Pump Using Blade Geometry Modification

Table 5

Results of numerical study at design flow coefficient.

	Angles	Efficiency	Ψ (head coefficient)
Symmetric angle blades		29.97	0.412
		39.95	0.737
		42.52	0.963
		42.42	1.035
		44.70	1.160
		43.66	1.203
		41.01	1.044
Nonsymmetric angle blades ()		33.07	0.422
		39.10	0.733
		41.97	0.981
		42.42	1.035
		42.95	1.069
		40.71	0.947
		37.96	0.759