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Experimental study of stratified swirl flame dynamics in a model gas turbine combustor

Author

Listed:
  • Zhang, Zhihao
  • Liu, Xiao
  • Gong, Yaozhen
  • Yang, Yang
  • Tang, Zijia
  • Liu, Gang
  • Deng, Fuquan
  • Yang, Jialong
  • Zheng, Hongtao

Abstract

The flame structure and dynamic response of stratified swirl flames are investigated using a stratified premixed swirl burner. The change of swirl intensity is achieved by swirlers with different swirl angles. Stratification of the flow and mixtures is established by varying the bulk air flow rates and mixture equivalence ratios between the inner and outer annulus. Depending on operating conditions, four different flame structures are stabilized in the combustor: A V-shaped flame (V-flame), a stratified flame (S-flame), a lifted flame (L-flame) and a special plate-shaped flame (P-flame). Thermoacoustic instabilities are then investigated. Generally, the frequency and intensity of the pressure and heat release pulsation are coupled. The amplitude of the pressure and heat release pulsation are all sensitive to the swirl intensity, air split ratio (ASR) and stratification ratio (SR). Large amplitude limit cycles are found in the strong swirl, high ASR and high SR flame. The dominant frequency of pulsation is about 100 Hz in the cases with SR < 1, when SR > 1, the dominant frequency fluctuates between 400 Hz and 500 Hz. The hysteresis phenomenon is also observed in current experiments. Different flame structures can occur in the same operating condition by varying the operating routines.

Suggested Citation

  • 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).
    • Handle: RePEc:eee:energy:v:211:y:2020:i:c:s0360544220318077
    DOI: 10.1016/j.energy.2020.118699
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    References listed on IDEAS

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    1. Song, Heng & Lin, Yuzhen & Han, Xiao & Yang, Dong & Zhang, Chi & Sung, Chih-Jen, 2020. "The thermoacoustic instability in a stratified swirl burner and its passive control by using a slope confinement," Energy, Elsevier, vol. 195(C).
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    Citations

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    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. 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).
    3. 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).
    4. 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).
    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. 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).
    7. 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).

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    1. Song, Heng & Han, Xiao & Su, Tong & Xue, Xin & Zhang, Chi & Sung, Chih-Jen, 2021. "Parametric study of the slope confinement for passive control in a centrally-staged swirl burner," Energy, Elsevier, vol. 233(C).
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