Numerical Investigations of Unsteady Flow in a Centrifugal Pump with a Vaned Diffuser

Figure 14

Tangential velocity in the radial gap (𝑅/𝑅₂=1.02) at mid-span.

(a)   Unsteady 𝑘−𝜀

(b) Unsteady RNG 𝑘−𝜀

(c) Unsteady realizable 𝑘−𝜀

(d) Unsteady 𝑘−𝜔 SST