IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v12y2019i24p4758-d297621.html
   My bibliography  Save this article

A Numerical Study on the Characteristics of Air–Fuel Mixing Using a Fluidic Oscillator in Supersonic Flow Fields

Author

Listed:
  • Eun Cheol Lee

    (Department of Aerospace Engineering, Inha University, Incheon 22212, Korea)

  • Seung-Won Cha

    (Department of Aerospace Engineering, Inha University, Incheon 22212, Korea)

  • Hee-Soo Kwon

    (Department of Aerospace Engineering, Inha University, Incheon 22212, Korea)

  • Tae-Seong Roh

    (Department of Aerospace Engineering, Inha University, Incheon 22212, Korea)

  • Hyoung Jin Lee

    (Department of Aerospace Engineering, Inha University, Incheon 22212, Korea)

Abstract

In this study, numerical simulations were conducted to confirm the possibility of improved mixing performance by using a fluidic oscillator as a fuel injector. Three-dimensional URANS non-reacting simulations were conducted to examine air–fuel mixing in a supersonic flow field of Mach 3.38. The numerical methods were validated through simulations of the oscillating flow generated from the fluidic oscillator. The results show that the mass flow rate and momentum are reduced at the outlet because the total pressure loss increases inside the fluidic oscillator, which means that higher pressure needs to be applied to supply the same mass flow rate. The simulation showed that the flow structure varies over time as the injected flow is swept laterally. With lateral injection, the fuel distribution is long and narrow, and asymmetric vortexes are generated. However, with central injection, the fuel distribution is relatively similar to the case of using a simple injector. Compared to the simple injector, the penetration length, flammable area, and mixing efficiency were improved. However, the total pressure loss in the flow field increases as well. The results showed that the supersonic fluidic oscillator could be fully utilized as a means to enhance the mixing effect, however a method to reduce the total pressure loss is necessary for practical application.

Suggested Citation

  • Eun Cheol Lee & Seung-Won Cha & Hee-Soo Kwon & Tae-Seong Roh & Hyoung Jin Lee, 2019. "A Numerical Study on the Characteristics of Air–Fuel Mixing Using a Fluidic Oscillator in Supersonic Flow Fields," Energies, MDPI, vol. 12(24), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:24:p:4758-:d:297621
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/12/24/4758/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/12/24/4758/
    Download Restriction: no
    ---><---

    Citations

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


    Cited by:

    1. Qian Wang & Shiwei Ge & Weidong Cao & Shanshan Yu & Zijie Liao, 2023. "Study of Arc Interruption Characteristics under Rated Current in Low Voltage Circuit Breakers," Energies, MDPI, vol. 16(10), pages 1-12, May.

    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:12:y:2019:i:24:p:4758-:d:297621. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.