In view of cantilever multistage centrifugal pump in operation process is prone to vibration of shafting and bring reliable and stability problems,due to its unique suspension center cantilever rotor structure. The rotor axis trajectory of cantilever multistage centrifugal pump was explored under design flow through combination of numerical simulation and experimental verification. Cantilever multistage centrifugal pump rotor dynamic characteristics in the operation was not only influenced by the uneven qua...