Numerical analysis of the internal flow and pressure pulsation characteristics of a submersible tubular electric pump device

In order to clarify the non-constant flow characteristics of impeller and bulb body submersible tubular electric pump device, entire rate conduit device is numerically calculated using numerical simulation method, focusing on analysis field guide vane time–frequency variation law pressure pulsation, results physical model testing confirm validity simulation. The findings demonstrate that a mostly responsible for impeller’s inlet number blades peaks valleys consistent. Under high condition 1.2 Q d , fluctuation in inlet, between small, main frequency located at three times rotational frequency, pulsation outlet has no obvious pattern small amplitude. As increases, peak value each monitoring point characteristic section gradually decreases. varies widely, ranging from 0.058 0.15, location inlet. fluctuates less due change rate. size scale omega vortex structure different moments same cycle structures direction shows gradual increase trend; with rise rate, there tendency velocity deflection angle surface decrease.