Table 4.

Comparison of impeller parameters of the A-point model, the B-point model, the C-point model, and the baseline model.

Design Variable	Unit	Baseline Model	A-Point Model	B-Point Model	C-Point Model
$b_2$	mm	4.9	6	5.2	5.5
${\beta }_2$	degree	23.3	23.3	22	23
$\varphi$	degree	460	433	400	400
$u_1$	mm	3.3	3.1	2.7	2.6
$u_2$	mm	11.8	10.1	10.9	11.1
$A_r$	-	8.1	7.9	8.3	7.7