Study on influences of blade deflection on flow characteristics around inverted-umbrella impeller

Yuxian Hu; Yuyuan Wang; Hongyan Li; Tao Sun; Jiayao Dai

doi:10.1117/12.3037691

9 August 2024 Study on influences of blade deflection on flow characteristics around inverted-umbrella impeller

Yuxian Hu, Yuyuan Wang, Hongyan Li, Tao Sun, Jiayao Dai

Proceedings Volume 13220, Third International Conference on Mechatronics and Mechanical Engineering (ICMME 2024); 1322003 (2024) https://doi.org/10.1117/12.3037691
Event: International Conference on Mechatronics and Mechanical Engineering (ICMME 2024), 2024, Xi'an, China

Abstract

Use the CFX software to numerically simulate the inverted umbrella Landy 7 and Landy 7-15 impeller with a blade deflection of 15 degrees. The influence of blade deflection on flow characteristics around the impeller, the variations of pressure difference, liquid velocity, and liquid phase turbulence following the change of blade deflection angle were discussed, which was then verified by the PIV test. The results showed that the surface disturbance performance of Landy 7-15 was better than Landy 7. The negative pressure area on the back of the impeller of Landy 7-15 was more evenly distributed, with an enormous pressure difference, higher liquid velocity, and more obvious turbulence than Landy 7, which can improve the impeller’s aeration efficiency. The turbulent value of Landy 7 was slightly higher than that of Landy 7-15 in the region near the bottom. Landy 7 also has stronger pushing force and agitation on water. This study could provide technical references for the structure optimization of the impeller.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yuxian Hu, Yuyuan Wang, Hongyan Li, Tao Sun, and Jiayao Dai "Study on influences of blade deflection on flow characteristics around inverted-umbrella impeller", Proc. SPIE 13220, Third International Conference on Mechatronics and Mechanical Engineering (ICMME 2024), 1322003 (9 August 2024); https://doi.org/10.1117/12.3037691

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