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

Table 5

Distribution of pressure difference.

Return vane number	Pressure difference Δp Pa
	Impeller	Diffuser	Diffuser return vane passages	Δ𝑝total
3	517349	103444	−122147	498646
8	512751	108942	−102010	519683
11	516752	107500	−92048	532204