This indicates that the method of twisting the centrifugal impeller of the suspended forward-extended blade shows a significant effect in preventing cavitation performance under such working conditions of high speed and negative pressure. According to the results, when P j drops from −50 kPa to −60 kPa, the cavitation perform changes the most significantly. To begin with, based on the D# pump performance test and Pumplinx simulation, the cavitation performance of high-speed pump with four different groups of impellers is studied under five working conditions of negative inlet pressure (P j=(−20, −30, −40, −50, −60)kPa) on the premise that energy characteristics agree well with cavitation performance. Therefore, the corrected coefficient k 1 of blade inlet exclusion coefficient is introduced four groups of centrifugal impellers with inlets of different geometric structures blades are put forward. 4Northwest A&F University, Shaanxi, ChinaĪddressing the cavitation prevention requirements for a longer service life of the high-speed centrifugal pump in the temperature control system of aerospace, the effect of blade inlet width on cavitation performance is studied on the premise of consistency of impeller outlet diameter D 2, impeller outlet width b 2, volute inlet diameter D 3, pump interface and other structural parameters.3Astronaut Center of China, Shaanxi, China.2National Joint Engineering Research Center of Special Pump System Technology, Shaanxi, China. ![]() 1Xi’an Aeronautical University, Shaanxi, China.Wen-xiong Chao 1,2*, Bao-lu Shi 3, Hui Ruan 1,2 and Wei Dong 4
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