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Experimental and numerical investigations of an atmospheric diffusion oxy-combustion flame in a gas turbine model combustor

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  • Nemitallah, Medhat A.
  • Habib, Mohamed A.

Abstract

An atmospheric diffusion oxy-combustion flame in a gas turbine model combustor has been investigated experimentally and numerically. Oxy-combustion and emission characterization, flame stabilization and oxy-combustion model validation analyses are the main goals of the present research work. The combustor is fuelled with CH4 and a mixture of CO2 and O2 as oxidizer. A modified two-step oxy-combustion reaction kinetics model for methane–oxygen combustion has been used in order to predict accurately the oxy-combustion characteristics. The conducted experimental results were used to validate the numerical model. Wide ranges of different operating parameters have been considered including equivalence ratio, percentage of O2/CO2 in the oxidizer mixture and fuel volume flow rate. The stability of the oxy-combustion diffusion flame is also investigated both experimentally and numerically. The experimental and numerical results showed that the stability of the oxy-combustion flame is affected when the operating percentage of oxygen in the oxidizer mixture is reduced below 25%. In all cases, flame was extinct for conditions of less than 21% oxygen in the oxidizer mixture. Flame visualization over a wide range of operating parameters has been carried out experimentally and comparisons with the numerical results have been conducted. The flames have been characterized in detail by measuring the exhaust gas temperatures and emissions and comparing them with those from the numerical model. The combustion was found to be improved with increasing the percentage of O2 at inlet however there is a limitation in temperature. Both experimental and numerical results are in good agreement. The modified two step reaction kinetics model was found to be capable of capturing the trends of temperature and the overall flame shape of the experimental data. Flame zone is also characterized in details by plotting the axial and radial temperatures, species concentrations and flow velocities using the numerical model.

Suggested Citation

  • Nemitallah, Medhat A. & Habib, Mohamed A., 2013. "Experimental and numerical investigations of an atmospheric diffusion oxy-combustion flame in a gas turbine model combustor," Applied Energy, Elsevier, vol. 111(C), pages 401-415.
    • Handle: RePEc:eee:appene:v:111:y:2013:i:c:p:401-415
    DOI: 10.1016/j.apenergy.2013.05.027
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    Citations

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    Cited by:

    1. Tyliszczak, Artur & Boguslawski, Andrzej & Nowak, Dariusz, 2016. "Numerical simulations of combustion process in a gas turbine with a single and multi-point fuel injection system," Applied Energy, Elsevier, vol. 174(C), pages 153-165.
    2. Zhao, Dan & Li, Shen & Zhao, He, 2016. "Entropy-involved energy measure study of intrinsic thermoacoustic oscillations," Applied Energy, Elsevier, vol. 177(C), pages 570-578.
    3. Khalil, Ahmed E.E. & Gupta, Ashwani K., 2017. "Acoustic and heat release signatures for swirl assisted distributed combustion," Applied Energy, Elsevier, vol. 193(C), pages 125-138.
    4. Habib, Mohamed A. & Rashwan, Sherif S. & Nemitallah, Medhat A. & Abdelhafez, Ahmed, 2017. "Stability maps of non-premixed methane flames in different oxidizing environments of a gas turbine model combustor," Applied Energy, Elsevier, vol. 189(C), pages 177-186.
    5. Hussain, Muzafar & Abdelhafez, Ahmed & Nemitallah, Medhat A. & Araoye, Abdulrazaq A. & Ben-Mansour, Rached & Habib, Mohamed A., 2020. "A highly diluted oxy-fuel micromixer combustor with hydrogen enrichment for enhancing turndown in gas turbines," Applied Energy, Elsevier, vol. 279(C).
    6. Mansir, Ibrahim B. & Nemitallah, Medhat A. & Habib, Mohamed A. & Khalifa, Atia E., 2018. "Experimental and numerical investigation of flow field and oxy-methane combustion characteristics in a low-power porous-plate reactor," Energy, Elsevier, vol. 160(C), pages 783-795.
    7. Wu, Gang & Jin, Xiao & Li, Qiangtian & Zhao, He & Ahmed, I.R. & Fu, Jianqin, 2016. "Experimental and numerical definition of the extreme heater locations in a closed-open standing wave thermoacoustic system," Applied Energy, Elsevier, vol. 182(C), pages 320-330.
    8. Enagi, Ibrahim I. & Al-attab, K.A. & Zainal, Z.A., 2018. "Liquid biofuels utilization for gas turbines: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 90(C), pages 43-55.
    9. Wu, Gang & Lu, Zhengli & Pan, Weichen & Guan, Yiheng & Ji, C.Z., 2018. "Numerical and experimental demonstration of actively passive mitigating self-sustained thermoacoustic oscillations," Applied Energy, Elsevier, vol. 222(C), pages 257-266.
    10. Khalil, Ahmed E.E. & Gupta, Ashwani K., 2017. "Flame fluctuations in Oxy-CO2-methane mixtures in swirl assisted distributed combustion," Applied Energy, Elsevier, vol. 204(C), pages 303-317.
    11. Mao Li & Yiheng Tong & Marcus Thern & Jens Klingmann, 2017. "Investigation of Methane Oxy-Fuel Combustion in a Swirl-Stabilised Gas Turbine Model Combustor," Energies, MDPI, vol. 10(5), pages 1-16, May.
    12. Habib, Mohamed A. & Nemitallah, Medhat A., 2015. "Design of an ion transport membrane reactor for application in fire tube boilers," Energy, Elsevier, vol. 81(C), pages 787-801.
    13. Rashwan, Sherif S. & Ibrahim, Abdelmaged H. & Abou-Arab, Tharwat W. & Nemitallah, Medhat A. & Habib, Mohamed A., 2017. "Experimental study of atmospheric partially premixed oxy-combustion flames anchored over a perforated plate burner," Energy, Elsevier, vol. 122(C), pages 159-167.
    14. 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.
    15. Mohammadpour, Mohammadreza & Ashjaee, Mehdi & Houshfar, Ehsan, 2022. "Thermal performance and heat transfer characteristics analyses of oxy-biogas combustion in a swirl stabilized boiler under various oxidizing environments," Energy, Elsevier, vol. 261(PA).
    16. Nemitallah, Medhat & Alkhaldi, Shabeeb & Abdelhafez, Ahmed & Habib, Mohamed, 2018. "Effect analysis on the macrostructure and static stability limits of oxy-methane flames in a premixed swirl combustor," Energy, Elsevier, vol. 159(C), pages 86-96.
    17. Khalil, Ahmed E.E. & Gupta, Ashwani K., 2017. "The role of CO2 on oxy-colorless distributed combustion," Applied Energy, Elsevier, vol. 188(C), pages 466-474.
    18. Akhtar, Saad & Piffaretti, Stefano & Shamim, Tariq, 2018. "Numerical investigation of flame structure and blowout limit for lean premixed turbulent methane-air flames under high pressure conditions," Applied Energy, Elsevier, vol. 228(C), pages 21-32.
    19. Furqan Tahir & Haider Ali & Ahmer A.B. Baloch & Yasir Jamil, 2019. "Performance Analysis of Air and Oxy-Fuel Laminar Combustion in a Porous Plate Reactor," Energies, MDPI, vol. 12(9), pages 1-16, May.
    20. Abdelhafez, Ahmed & Rashwan, Sherif S. & Nemitallah, Medhat A. & Habib, Mohamed A., 2018. "Stability map and shape of premixed CH4/O2/CO2 flames in a model gas-turbine combustor," Applied Energy, Elsevier, vol. 215(C), pages 63-74.
    21. Mardani, A. & Fazlollahi Ghomshi, A., 2016. "Numerical study of oxy-fuel MILD (moderate or intense low-oxygen dilution combustion) combustion for CH4–H2 fuel," Energy, Elsevier, vol. 99(C), pages 136-151.
    22. Habib, Mohamed A. & Nemitallah, Medhat A. & Ahmed, Pervez & Sharqawy, Mostafa H. & Badr, Hassan M. & Muhammad, Inam & Yaqub, Mohamed, 2015. "Experimental analysis of oxygen-methane combustion inside a gas turbine reactor under various operating conditions," Energy, Elsevier, vol. 86(C), pages 105-114.
    23. Shakeel, Mohammad Raghib & Sanusi, Yinka S. & Mokheimer, Esmail M.A., 2018. "Numerical modeling of oxy-methane combustion in a model gas turbine combustor," Applied Energy, Elsevier, vol. 228(C), pages 68-81.
    24. Zhang, R.C. & Fan, W.J. & Shi, Q. & Tan, W.L., 2014. "Combustion and emissions characteristics of dual-channel double-vortex combustion for gas turbine engines," Applied Energy, Elsevier, vol. 130(C), pages 314-325.

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