Residence time distribution of high viscosity fluids falling film flow down outside of industrial-scale vertical wavy wall: Experimental investigation and CFD prediction

Shichang Chen; Lihao Zhang; Yongjun Wang; Xianming Zhang; Wenxing Chen

doi:10.1016/j.cjche.2018.12.022

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Residence time distribution of high viscosity fluids falling film flow down outside of industrial-scale vertical wavy wall: Experimental investigation and CFD prediction

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

- Residence time distribution of high viscosity fluids falling film flow down outside of industrial-scale vertical wavy wall: Experimental investigation and CFD prediction
- Chinese Journal of Chemical Engineering Vol. 27, Issue 7, Pages: 1586-1594(2019)
- Affiliations：
  
  National Engineering Laboratory for Textile Fiber Materials and Processing Technology(Zhejiang), Zhejiang Sci-Tech University,Hangzhou,China,310018
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.12.022
  CLC：
- Published：2019
- Accepted：
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Shichang Chen, Lihao Zhang, Yongjun Wang, Xianming Zhang, Wenxing Chen. Residence time distribution of high viscosity fluids falling film flow down outside of industrial-scale vertical wavy wall: Experimental investigation and CFD prediction[J]. Chinese Journal of Chemical Engineering, 2019, 27(7): 1586-1594.
DOI：

Shichang Chen, Lihao Zhang, Yongjun Wang, Xianming Zhang, Wenxing Chen. Residence time distribution of high viscosity fluids falling film flow down outside of industrial-scale vertical wavy wall: Experimental investigation and CFD prediction[J]. Chinese Journal of Chemical Engineering, 2019, 27(7): 1586-1594. DOI： 10.1016/j.cjche.2018.12.022.

摘要

Abstract

The flow behavior of gravity-driven falling film of non-conductive high viscosity polymer fluids on an industrial-scale vertical wavy wall was investigated in terms of film thickness and residence time distribution by numerical simulation and experiment. Falling film flow of high viscosity fluids was found to be steady on a vertical wavy wall in the presence of the large film thickness. The comparison between numerical simulation and experiment for the film thickness both in crest and trough of wavy wall showed good agreement. The simulation results of average residence time of falling film flow with different viscous fluids were also consistent with the experimental results. This work provides the initial insights of how to evaluate and optimize the falling film flow system of polymer fluid.

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