IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v132y2017icp57-64.html
   My bibliography  Save this article

Combustion stability of gaseous CH4/O2 and H2/O2 coaxial jet flames in a single-element combustor

Author

Listed:
  • Choi, Sun
  • Kim, Tae Young
  • Kim, Hee Kyung
  • Jeung, In-Seuck
  • Koo, Jaye
  • Kwon, Oh Chae

Abstract

In order to understand the combustion stability of a methane (CH4)/oxygen (O2) bipropellant as a next-generation rocket liquid propellant, the combustion stability limits and morphology of gaseous CH4/O2 (GCH4/GO2) coaxial jet flames, among various phases, in a single-element combustor are experimentally studied compared with the gaseous hydrogen/O2 (GH2/GO2) coaxial jet flames. Only the stably attached flame and blowoff regimes are observed for both the GCH4/GO2 and GH2/GO2 flames, showing the flame thickness smaller than the injector lip thickness. Although the combustion stability limits of the GCH4/GO2 flames are narrower than the GH2/GO2 flames, practical use of CH4 in rocket engine applications seems to be acceptable since the fuel-rich CH4/O2 flames show very stabilized and intensified burning. For the GCH4/GO2 flames, the outer flame generated by the recirculating O2 is relatively weak and OH∗ is distributed up to the downstream. With increasing O2 injection velocity the length of the GCH4/GO2 flames and the location at the maximum OH∗ intensity increase even under turbulent combustion condition, due to the saturated enhancement of CH4-O2 diffusivity and the strong burning of pure O2 near the injector lip. The present results provide a useful database to model combustion of CH4/O2 bipropellants under various phases.

Suggested Citation

  • Choi, Sun & Kim, Tae Young & Kim, Hee Kyung & Jeung, In-Seuck & Koo, Jaye & Kwon, Oh Chae, 2017. "Combustion stability of gaseous CH4/O2 and H2/O2 coaxial jet flames in a single-element combustor," Energy, Elsevier, vol. 132(C), pages 57-64.
    • Handle: RePEc:eee:energy:v:132:y:2017:i:c:p:57-64
    DOI: 10.1016/j.energy.2017.05.057
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544217308137
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2017.05.057?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Choi, Sun & Kim, Tae Young & Kim, Hee Kyung & Koo, Jaye & Kim, Jeong Soo & Kwon, Oh Chae, 2015. "Properties of inverse nonpremixed pure O2/CH4 coflow flames in a model combustor," Energy, Elsevier, vol. 93(P1), pages 1105-1115.
    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. Cai, Peng & Liu, Zhenyi & Li, Pengliang & Zhao, Yao & Li, Mingzhi & Li, Ranran & Wang, Chen & Xiu, Zihao, 2023. "Effects of fuel component, airflow field and obstacles on explosion characteristics of hydrogen/methane mixtures fuel," Energy, Elsevier, vol. 265(C).
    2. Kim, Young Hoo & Kim, Jae Hyun & Kwon, Oh Chae, 2023. "Combustion characteristics of O2/CH4 coaxial jet flames in a model combustor through their visualization and the statistical analysis," Energy, Elsevier, vol. 275(C).
    3. Kim, Tae Young & Choi, Sun & Kim, Young Hoo & Ahn, Yeong Jong & Kim, Hee Kyung & Kwon, Oh Chae, 2018. "Combustion characteristics of gaseous inverse O2/H2 coaxial jet flames in a single-element model combustor," Energy, Elsevier, vol. 155(C), pages 262-271.

    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. De Giorgi, Maria Grazia & Ficarella, Antonio & Sciolti, Aldebara & Pescini, Elisa & Campilongo, Stefano & Di Lecce, Giorgio, 2017. "Improvement of lean flame stability of inverse methane/air diffusion flame by using coaxial dielectric plasma discharge actuators," Energy, Elsevier, vol. 126(C), pages 689-706.
    2. Kim, Young Hoo & Kim, Jae Hyun & Kwon, Oh Chae, 2023. "Combustion characteristics of O2/CH4 coaxial jet flames in a model combustor through their visualization and the statistical analysis," Energy, Elsevier, vol. 275(C).
    3. Kapusta, Łukasz Jan & Shuang, Chen & Aldén, Marcus & Li, Zhongshan, 2020. "Structures of inverse jet flames stabilized on a coaxial burner," Energy, Elsevier, vol. 193(C).
    4. Kim, Tae Young & Choi, Sun & Kim, Young Hoo & Ahn, Yeong Jong & Kim, Hee Kyung & Kwon, Oh Chae, 2018. "Combustion characteristics of gaseous inverse O2/H2 coaxial jet flames in a single-element model combustor," Energy, Elsevier, vol. 155(C), pages 262-271.

    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:eee:energy:v:132:y:2017:i:c:p:57-64. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    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.