V3V study and large eddy simulation of turbulence characteristics in a stirred vessel with Rushton turbine impeller

SHI Naijin; ZHOU Yongjun; BAO Suyang; XIN Wei; TAO Lanlan

doi:10.11949/j.issn.0438-1157.20170594

您当前的位置：

首页 >

文章列表页 >

V3V study and large eddy simulation of turbulence characteristics in a stirred vessel with Rushton turbine impeller

更新时间：2025-12-10

- V3V study and large eddy simulation of turbulence characteristics in a stirred vessel with Rushton turbine impeller
- CIESC Journal Issue 11, Pages: 4069-4078(2017)
- 作者机构：
  
  1. 南京工业大学机械与动力工程学院,江苏,南京,211816
  2. 江苏省特种设备安全监督检验研究院国家化工设备质量监督检验中心,江苏,苏州,215600
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170594
  CLC： Q022
- Online First：05 November 2017，
  
  Published：05 November 2017
- 稿件说明：
移动端阅览
SHI Naijin, ZHOU Yongjun, BAO Suyang, et al. V3V study and large eddy simulation of turbulence characteristics in a stirred vessel with Rushton turbine impeller[J]. CIESC Journal, 2017, (11): 4069-4078.
DOI：

SHI Naijin, ZHOU Yongjun, BAO Suyang, et al. V3V study and large eddy simulation of turbulence characteristics in a stirred vessel with Rushton turbine impeller[J]. CIESC Journal, 2017, (11): 4069-4078. DOI： 10.11949/j.issn.0438-1157.20170594.

摘要

分别用体三维速度测量技术（volumetric three-component velocimetry measurements，V3V）和大涡模拟（large eddy simulation，LES）方法对涡轮桨搅拌槽内流场进行研究，发现在完全湍流状态下，涡轮桨搅拌槽内流场的量纲1相平均速度及湍动能分布同Reynolds数无关。用V3V方法实现了Rushton桨叶附近三维流场的重构；探讨尾涡的三维结构及运动规律；分析了叶片后方30°截面轴向、径向和环向速度沿径向分布规律。用V3V实验结果对比了2D-PIV（particle image velocimetry）数据中的尾涡涡对位置和涡量，涡对位置吻合度较好，但2D-PIV中涡量较V3V小37.5%；通过大涡模拟得到完整的尾涡结构，发现在叶片上边缘后侧存在一个和尾涡形成方式相同但不成对出现的涡结构；将大涡模拟结果和2D-PIV及V3V实验结果对比发现，大涡模拟在速度分布及尾涡运动轨迹方面均同实验结果吻合较好，表明大涡模拟能较好地预测涡轮桨搅拌槽内流场。

Abstract

The volumetric three-component velocimetry (V3V) measurements and the large eddy simulation (LES) were used to study the flow field near the standard Rushton impeller in a stirred vessel. The results of V3V indicate that the Reynolds number has almost no influence on the normalized phase-resolved velocity and TKE when the flow field is absolutely turbulent. The structure and movement law of trailing vortices are discussed by reconstruction of the three-dimensional flow field with V3V. The distributions of radial

axial and tangential velocities in 30℃ross-section behind the impeller were analyzed. The distributions of vortex pair by V3V were in good agreement with these by 2D-PIV (particle image velocimetry)

however the vorticity by V3V is about 37.5% larger. LES method was used to simulate flow field in stirred tank with Rushton turbine impeller. The velocity distribution and trailing trajectory of LES results are in good agreement with the 2D-PIV and V3V data. Complete structure of the trailing vortices had been obtained and a vortex

which is similar with trailing vortices

was discovered near the up surface of the impeller.

关键词

Keywords

references

Views

228

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

V3V study on flow field characteristics in a stirred vessel with Rushton turbine impeller

Study on ion transport and nucleation mechanism in electrochemical water softening process

Optimization of air flotation cyclone separation conditions based on response surface methodology

Investigation on flow field in stirred tank equipped with three-blade swept-back-HEDT combined impeller by experiment and simulation

Numerical analysis of local flow and heat transfer of FCC domain in pebble bed reactor

Related Author

WANG Lulu

XU Jianmin

LIN Wei

DU Jian

YAO Chen

ZHU Jiahao

WANG Wei

ZHENG Xiaotao

Related Institution

School of Mechanical & Electrical Engineering, Wuhan Institute of Technology

Hubei Provincial Engineering Technology Research Center of Green Chemical Equipment

Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety

College of Mechanical and Electrical Engineering, Wuhan Institute of Technology

Green Chemical Equipment Engineering Technology Research Center

⁰