CFD Simulation and PIV Measurement of Flow Field of Double-layer Paddle Agitator
[1]WANG Dingbiao,YANG Liyun,YU Yan,et al.CFD Simulation and PIV Measurement of Flow Field of Double-layer Paddle Agitator[J].Journal of Zhengzhou University (Engineering Science),2009,30(02):1-5.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
30
Number of periods:
2009年02期
Page number:
1-5
Column:
Public date:
1900-01-01
- Title:
- CFD Simulation and PIV Measurement of Flow Field of Double-layer Paddle Agitator
- Keywords:
- agitator; double-layer paddles; flow field; CFD; PIV
- CLC:
- -
- DOI:
- -
- Abstract:
- CFD technology and PIV measurement were used to study the flow field and concentration distribution of the double-layer impeller in the agitator at different positions. Based on the Navier-Stokes equation and the standard κ-ε turbulence model, the turbulent flow field of the agitator was solved, and the flow pattern changes and mixing concentrations of the agitator at different rotational speeds and different blade heights were investigated. The results show that the flow pattern of the flow field basically does not change when the position of the double-layer impeller is changed, and the upper and lower "double circulation" flow is formed with the blade as the center. With the change of feeding position and blade height, there is basically no effect on the stirring power, but the concentration of different monitoring points changes greatly, and the impact on the mixing time is also greater. The use of paddle part feeding can make full use of the turbulence characteristics of the fluid, accelerate the mixing speed, shorten the mixing time, save costs and improve economic benefits.、
- References:
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Last Update:
1900-01-01