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The Transient Flow Characteristics Analysis of Pump System

Due to the quests of technology and changes of external load, dynamical system would under non-regulative operating condition. To discuss this situation, this paper did some research about the unsteady flows in centrifugal pump by simulating test. It shows that if non-regulative operating condition emerges in the pump system, some unsteady flow which possesses transient characteristics would appear, which driven by the common disturbance from the pump and valves in this system. Besides, the transient intensity of the system under non-regulative operating condition depends on the relative intensity of the capacity and inertia. When the capacity in system dominates, it would make transient intensity weaken, but if the inertia dominates, the transient intensity would move to an opposite side.