[1]王定标,杨丽云,于艳,等.双层桨叶搅拌器流场的CFD模拟与PIV测量[J].郑州大学学报(工学版),2009,30(02):1-5.
　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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双层桨叶搅拌器流场的CFD模拟与PIV测量()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
30
期数:
2009年02期
页码:
1-5
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
CFD Simulation and PIV Measurement of Flow Field of Double-layer Paddle Agitator
作者:
王定标; 杨丽云; 于艳; 等.
郑州大学化工学院,河南,郑州,450001, 新乡学院化工与环境学院,河南,新乡,453003
Author(s):
WANG Dingbiao; YANG Liyun; YU Yan; etc
1．School of Chemical Engineering，Zhengzhou University，Zhengzhou 450001，China；2．School of Chemical and Environment Engineering。Xinaxiang College，Xinxiang 453003，China
关键词:
搅拌器;  双层桨叶;  流场;  CFD;  PIV
Keywords:
agitator;  double-layer paddles;  flow field;  CFD;  PIV
文献标志码:
A
摘要:
利用CFD技术和PIV测量研究了搅拌器内双层桨叶不同位置的流场和浓度分布.基于Navier-Stokes方程和标准κ-ε湍流模型,求解搅拌器的湍流场,考察了在不同转速和不同桨叶高度下搅拌器的流型变化和混合浓度情况.结果表明:改变双层桨叶位置,流场的流型基本不发生变化,均以桨叶为中心形成上下"双循环"流动;随着加料位置和桨叶高度的变化,对搅拌功率基本没有影响,但时不同监测点的浓度变化较大,对混合时间的影响也较大;采用桨叶部位加料可以充分利用流体的湍流特性,加快混合速度,缩短混合时间,节约成本,提高经济效益.
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.、

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更新日期/Last Update: 1900-01-01