Influence of Circumferential Placement Position of Guide Vanes on Performance and Dynamic Characteristics of Nuclear Reactor Coolant Pump

Table 1

Main performance parameters of the model pump.

Parameters	Numerical value
Design flow rate Qv/(m^3/h)	1144.7
Design head H/m	17.8
Speed n/rpm	1750
Special speed	416
Number of impeller blades Z1	5
Number of guide vane blades Z2	18
Impeller inlet diameter d1/mm	272
Impeller outlet width b2/mm	94
Guide vane inlet width b3/mm	94
Guide vane outlet diameter d4/mm	450