Full
Outline
In order to explore the influence of the blade arrangement mode on the vibration characteristics of the self‑priming jet impellers，a combination of experimental and numerical methods was adopted. A comparative analysis was conducted on the fluid flow characteristics and mixing power consumption in stirred tanks with co‑directional（SJI） and staggered（PSJI） blade configurations，along with an evaluation of vibration differences under static and prestressed modal conditions. The results show that the staggered blade arrangement generates upward and downward jet flows，increasing fluid flow complexity. Under power‑law fluid conditions，compared to SJI，the viscosity and mixing power consumption around PSJI blades decreased by 1.2% and 4.0%，respectively，while the maximum stress of PSJI increased by 8.86%. Modal analysis revealed the largest vibration mode differences between the 1st/2nd‑order static and prestressed modes，with PSJI vibration amplitudes exceeding SJI by 14%~18% due to blade arrangement effects. Analysis of the 6th‑order modes showed that the liquid-solid coupling had less influence on PSJI vibration modes than on SJI，with maximum vibration amplitudes occurring at the jet outlet. The staggered configuration enhanced bottom fluid flow，intensified shear-thinning effects on power‑law fluids，and reduced power consumption. This study provides insights for the optimal design and application of stirred impellers.
82
32
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
