| Autor: |
ZHAO Wei-guo, LI Xing-guo, NIE Xiong-jie, LIU Ying |
| Předmět: |
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| Zdroj: |
China Rural Water & Hydropower; 2024, Issue 10, p119-126, 8p |
| Abstrakt: |
In an effort to suppress cavitation in low-specific speed centrifugal pump, a method of changing the axial angle of slotted blade was proposed, and three oblique slotted blade schemes were designed. By using numerical simulation methods to compare the experimental results of centrifugal pumps, analyze the effect of blade oblique slotting on the suppression of cavitation in centrifugal pump. The simulation results show that the oblique slotted blade with an axial angle of 5° has the most significant cavitation suppression result on low-specific speed centrifugal pump, and the fracture head is increased by 0.281 m. The oblique slotted blade suppress the development of cavitation in the flow field of the centrifugal pump impeller, and the maximum reduction in cavitation volume is 67.25% during the severe cavitation stage; The oblique slotted blade optimize the flow field structure of the impeller, reduces the low-pressure area at the impeller inlet, and reduces the turbulent kinetic energy in the impeller channel. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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