IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2024i7p1639-d1366439.html
   My bibliography  Save this article

Experimental Investigation on Pressure and Flame Surface Oscillation in a Dual-Cavity Scramjet Combustor

Author

Listed:
  • Wenhao Liao

    (School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Yidan Chen

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

  • Ningfei Wang

    (School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China)

Abstract

Pressure and flame surface oscillations are common in supersonic combustion instability. Understanding the characteristics, generation, maintenance, and interaction mechanisms of these oscillations is crucial. An experimental setup with an alcohol heater was used to study injection positions and fuel quantities in a dual-cavity scramjet combustion chamber. High-frequency pressure sensors and high-speed equipment were employed in this research. The most significant pressure oscillation occurred at a global equivalence ratio of 1.2 with a frequency of 300 Hz and an amplitude of 43%. Mean oscillation was not affected by changes in equivalence ratio. Increased amplitude was linked to stronger flow instability, indicating that flow instability induced by unstable heat release plays a significant role in supersonic combustion instability.

Suggested Citation

  • Wenhao Liao & Yidan Chen & Ningfei Wang, 2024. "Experimental Investigation on Pressure and Flame Surface Oscillation in a Dual-Cavity Scramjet Combustor," Energies, MDPI, vol. 17(7), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:7:p:1639-:d:1366439
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/7/1639/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/17/7/1639/
    Download Restriction: no
    ---><---

    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:17:y:2024:i:7:p:1639-:d:1366439. 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.