IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i5p1228-d329492.html
   My bibliography  Save this article

Experimental and Numerical Study on Flow Resistance and Bubble Transport in a Helical Static Mixer

Author

Listed:
  • Fangyang Yuan

    (Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
    School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China)

  • Zhengwei Cui

    (Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China)

  • Jianzhong Lin

    (School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China)

Abstract

Flow resistance and bubble transport in a helical static mixer were studied experimentally and numerically. The inline mixer increases the volume fraction of gas in liquids by breaking bubbles into smaller sizes with a micrometer size in the flow experiments. The gas–liquid flow was simulated by a combination of computational fluid dynamics and Taylor expansion methods of moments. The friction factor of the helical static mixer is much smaller than that of the Kenics static mixers. The pressure drop increases with the Reynolds number, and the increment is larger when the Reynolds number is higher. The equidistant pressure drop increases with the argument of Reynolds number, and increases when the pitch decreases from upstream to downstream. The energy expenditure increases significantly when the variable-pitch coefficient is too small. The bubble geometric mean diameter decreases and the geometric standard deviation increases when the gas–liquid fluid flows through the mixer. The variable pitch structure enhances the bubble breakup effectively. The change of the bubble size decreases with the argument of the Reynolds number. The effect of the mixer has a limitation on breaking the bubbles.

Suggested Citation

  • Fangyang Yuan & Zhengwei Cui & Jianzhong Lin, 2020. "Experimental and Numerical Study on Flow Resistance and Bubble Transport in a Helical Static Mixer," Energies, MDPI, vol. 13(5), pages 1-20, March.
  • Handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1228-:d:329492
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/5/1228/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/13/5/1228/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Jesús Cerezo & Roberto Best & Jorge Jesús Chan & Rosenberg J. Romero & Jorge I. Hernandez & Fernando Lara, 2017. "A Theoretical-Experimental Comparison of an Improved Ammonia-Water Bubble Absorber by Means of a Helical Static Mixer," Energies, MDPI, vol. 11(1), pages 1-14, December.
    2. Tenglong Cong & Xiang Zhang, 2018. "Numerical Study of Bubble Coalescence and Breakup in the Reactor Fuel Channel with a Vaned Grid," Energies, MDPI, vol. 11(1), pages 1-16, January.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Guodong Li & Dandan Cai & Shanshan Li & Xiaogang Li & Pengfeng Li & Juanli Zuo, 2020. "The Influence of Groove Structure Parameters on the Maximum Flow Resistance of a Rectangular Narrow Channel," Energies, MDPI, vol. 13(14), pages 1-15, July.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Alfredo Iranzo & Francisco Javier Pino & José Guerra & Francisco Bernal & Nicasio García, 2018. "Cooling Process Analysis of a 5-Drum System for Radioactive Waste Processing," Energies, MDPI, vol. 11(10), pages 1-25, October.
    2. Sehgal, Shitiz & Alvarado, Jorge L. & Hassan, Ibrahim G. & Kadam, Sambhaji T., 2021. "A comprehensive review of recent developments in falling-film, spray, bubble and microchannel absorbers for absorption systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 142(C).
    3. Pavel Lobanov & Maksim Pakhomov & Viktor Terekhov, 2019. "Experimental and Numerical Study of the Flow and Heat Transfer in a Bubbly Turbulent Flow in a Pipe with Sudden Expansion," Energies, MDPI, vol. 12(14), pages 1-18, July.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1228-:d:329492. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.