PIV experiment and large eddy simulation of turbulence characteristics in a confined impinging jet reactor

Miao Liu; Zhengming Gao; Yongjiu Yu; Zhipeng Li; Jing Han; Ziqi Cai; Xiongbing Huang

doi:10.1016/j.cjche.2018.04.006

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PIV experiment and large eddy simulation of turbulence characteristics in a confined impinging jet reactor

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- PIV experiment and large eddy simulation of turbulence characteristics in a confined impinging jet reactor
- Chinese Journal of Chemical Engineering Vol. 27, Issue 1, Pages: 10-20(2019)
- Affiliations：
  
  State Key Laboratory of Chemical Resource Engineering, School of Chemical Engineering, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.04.006
  CLC：
- Published：2019
- Accepted：
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Miao Liu, Zhengming Gao, Yongjiu Yu, Zhipeng Li, Jing Han, Ziqi Cai, Xiongbing Huang. PIV experiment and large eddy simulation of turbulence characteristics in a confined impinging jet reactor[J]. Chin.J.Chem.Eng., 2019, 27(1): 10-20.
DOI：

Miao Liu, Zhengming Gao, Yongjiu Yu, Zhipeng Li, Jing Han, Ziqi Cai, Xiongbing Huang. PIV experiment and large eddy simulation of turbulence characteristics in a confined impinging jet reactor[J]. Chin.J.Chem.Eng., 2019, 27(1): 10-20. DOI： 10.1016/j.cjche.2018.04.006.

摘要

Abstract

Confined impinging jet reactor (CIJR) is a typical process intensification device used in the chemical industry. In this study

two dimensional Particle Image Velocimetry (PIV) and Large Eddy Simulation (LES) method were used to investigate the flow field in a CIJR with jets of diameter 3 mm under highly turbulent condition. The results showed LES can predict the velocity and Turbulence Kinetic Energy (TKE) distributions in the reactor well by comparing with the PIV results. In the CIJR

the stagnation point fluctuates with the turbulence

and its instantaneous position accords with the normal distribution. Three methods

including s-t representation

Lumley-Newman triangle and A-G representation

were used to compare the turbulence anisotropy in the mixing chamber. It was found that the anisotropy in the impinging area and at the edge of impinging jet was strong and the maximum deviation was up to 40%. The results from 2D PIV would lead to an overestimation of the turbulent kinetic energy as much as 20% to 30% than the results from the three dimensional numerical simulation.

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