Experiments and Numerical Simulation of Performances and Internal Flow for High-Speed Rescue Pump with Variable Speeds

Figure 13

Time histories of pressure pulsation coefficient in diffuser with different rotation speeds.

(a) 3000 rpm

(b) 3600 rpm

(c) 4200 rpm

(d) 4800 rpm

(e) 5400 rpm

(f) 6000 rpm