“…With an increase in the flow rate, the time-domain distribution of the pressure pulsation coefficient becomes more and more disordered, and the smaller peak is more obvious. It can be considered that the pressure pulsation at the outlet of the fire pump is mainly affected by rotor-stator interaction, 19 as well as other factors including fluid impact, and this influence will be more obvious with an increase in the flow rate. By comparing the pressure fluctuation coefficient under different flow rates, it can be seen that the maximum drop of pressure fluctuation coefficient at the outlet of the fire pump is 0.071, 0.091, 0.076, 0.066, and 0.106 respectively.…”