Numerical Investigation of a First Stage of a Multistage Centrifugal Pump: Impeller, Diffuser with Return Vanes, and Casing

Table 4

Distribution of pressure difference.

Vane number	Pressure difference Δp Pa
	Impeller	Diffuser	Diffuser return vane passages	∆𝑝total
7	500556	70817	−89149	482224
8	496559	87279	−85170	498668
12	476198	103252	−78607	500843