IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v236y2021ics0360544221017606.html
   My bibliography  Save this article

Flame structures and thermoacoustic instabilities of centrally-staged swirl flames operating in different partially-premixed modes

Author

Listed:
  • Wang, Xinyao
  • Han, Meng
  • Han, Xiao
  • Chi Zhang,
  • Sung, Chih-Jen

Abstract

Flame structures and thermoacoustic instabilities of centrally-staged swirl flames fueled with methane at atmospheric pressure are experimentally investigated by varying the stratification ratio (SR) and covering four different partially-premixed modes, namely fully-premixed main and pilot stages, fully-premixed-pilot/partially-premixed-main stages, partially-premixed-pilot/fully-premixed-main stages, and partially-premixed main and pilot stages. The flame structures in the quiet cases at SR = 0–3 are studied, and three basic flame types can be defined with increasing SR: the lifted flame, the attached twin-flame, and the V-shaped flame. The above basic flame structures show deviations in different partially-premixed modes. The links between flame structures and thermoacoustic instabilities are investigated in the unstable cases by exciting thermoacoustic instabilities with higher thermal power at increased global equivalence ratio. The results show that the partial premixing in the main stage excites stronger thermoacoustic instabilities and thus leads to different flame structures. Simplified thermoacoustic network analysis is also conducted to provide an insight into the nature of thermoacoustic instabilities in the three basic flame structures summarized in the unstable cases. The present investigation reveals the effect of partially-premixed modes on flame structures and thermoacoustic instabilities, which can guide the early-stage design and the development of instability control strategies in practical combustion systems.

Suggested Citation

  • Wang, Xinyao & Han, Meng & Han, Xiao & Chi Zhang, & Sung, Chih-Jen, 2021. "Flame structures and thermoacoustic instabilities of centrally-staged swirl flames operating in different partially-premixed modes," Energy, Elsevier, vol. 236(C).
    • Handle: RePEc:eee:energy:v:236:y:2021:i:c:s0360544221017606
    DOI: 10.1016/j.energy.2021.121512
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544221017606
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2021.121512?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. Zhang, Zhihao & Liu, Xiao & Gong, Yaozhen & Yang, Yang & Tang, Zijia & Liu, Gang & Deng, Fuquan & Yang, Jialong & Zheng, Hongtao, 2020. "Experimental study of stratified swirl flame dynamics in a model gas turbine combustor," Energy, Elsevier, vol. 211(C).
    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. Wang, Xinyao & Han, Xiao & Sung, Chih-Jen, 2023. "Transitions of thermoacoustic modes and flame dynamics in a centrally-staged swirl combustor," Energy, Elsevier, vol. 263(PC).
    2. Lv, Guangpu & Liu, Xiao & Zhang, Zhihao & Li, Shengnan & Liu, Enhui & Zheng, Hongtao, 2023. "The effects of premixed pilot-stage on combustion instabilities in stratified swirling flames: A large eddy simulation study," Energy, Elsevier, vol. 274(C).

    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. Belal, Belal Y. & Li, Gesheng & Zhang, Zunhua & El-Batsh, H.M. & Moneib, Hany A. & Attia, Ali M.A., 2021. "The effect of swirl burner design configuration on combustion and emission characteristics of lean pre-vaporized premixed flames," Energy, Elsevier, vol. 228(C).
    2. Qi, Lei & Dong, Jingnan & Hong, Wenpeng & Wang, Mingtian & Lu, Tao, 2023. "Investigation of rotating detonation gas turbine cycle under design and off-design conditions," Energy, Elsevier, vol. 264(C).
    3. Wang, Xinyao & Han, Xiao & Sung, Chih-Jen, 2023. "Transitions of thermoacoustic modes and flame dynamics in a centrally-staged swirl combustor," Energy, Elsevier, vol. 263(PC).
    4. Rahimi, Sajjad & Mazaheri, Kiumars & Alipoor, Alireza & Mohammadpour, Amirreza, 2023. "The effect of hydrogen addition on methane-air flame in a stratified swirl burner," Energy, Elsevier, vol. 265(C).
    5. Lv, Guangpu & Liu, Xiao & Zhang, Zhihao & Li, Shengnan & Liu, Enhui & Zheng, Hongtao, 2023. "The effects of premixed pilot-stage on combustion instabilities in stratified swirling flames: A large eddy simulation study," Energy, Elsevier, vol. 274(C).
    6. Park, Yeseul & Choi, Minsung & Choi, Gyungmin, 2022. "Fault detection of industrial large-scale gas turbine for fuel distribution characteristics in start-up procedure using artificial neural network method," Energy, Elsevier, vol. 251(C).

    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:236:y:2021:i:c:s0360544221017606. 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.