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Study on Fiber Clogging Mechanism in Sewage Pump Based on CFD–DEM Simulation

Author

Listed:
  • Shuihua Zheng

    (Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China)

  • Chaojie Yang

    (Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China)

  • Chaoshou Yan

    (Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China)

  • Min Chai

    (Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China
    State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Zenan Sun

    (Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China)

Abstract

A large number of solid particles and fibrous impurities are always entrained in the fluid transported by a sewage pump, which can easily lead to the blockage of the sewage pump. In view of this, CFD–DEM simulations were conducted in this paper to reveal the fiber clogging mechanism in the sewage pump. A CFD–DEM coupling method with a fiber model was established and verified by an experimental benchmark, i.e., the rectangular flow channel. The method was then applied to a model sewage pump to, after mesh independence tests, analyze the effects of flow rate and fiber length on fiber motion and clogging. The results showed that the position of fiber retention coincides with the position of the vortex, mainly located at the inlet of the impeller, the head of the blade, the middle of the blade, and the tongue in the pump. In the case of a low flow rate, the fiber was more likely to cause blockage in the head of the blade, and in the case of a large flow rate, the fiber would wind around the tongue in the pump. At the same flow rate, long fiber was more likely to stay on the blade’s suction surface.

Suggested Citation

  • Shuihua Zheng & Chaojie Yang & Chaoshou Yan & Min Chai & Zenan Sun, 2022. "Study on Fiber Clogging Mechanism in Sewage Pump Based on CFD–DEM Simulation," Energies, MDPI, vol. 15(5), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1598-:d:755112
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    References listed on IDEAS

    as
    1. Cheng Tang & Youn-Jea Kim, 2020. "CFD-DEM Simulation for the Distribution and Motion Feature of Solid Particles in Single-Channel Pump," Energies, MDPI, vol. 13(19), pages 1-12, September.
    2. Giorgia Tomassi & Pietro Romano & Gabriele Di Giacomo, 2021. "Modern Use of Water Produced by Purification of Municipal Wastewater: A Case Study," Energies, MDPI, vol. 14(22), pages 1-13, November.
    3. Cheng Tang & You-Chao Yang & Peng-Zhan Liu & Youn-Jea Kim, 2021. "Prediction of Abrasive and Impact Wear Due to Multi-Shaped Particles in a Centrifugal Pump via CFD-DEM Coupling Method," Energies, MDPI, vol. 14(9), pages 1-15, April.
    4. Xiaoke He & Yingchong Zhang & Chuan Wang & Congcong Zhang & Li Cheng & Kun Chen & Bo Hu, 2020. "Influence of Critical Wall Roughness on the Performance of Double-Channel Sewage Pump," Energies, MDPI, vol. 13(2), pages 1-20, January.
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