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Numerical simulations of combustion process in a gas turbine with a single and multi-point fuel injection system

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  • Tyliszczak, Artur
  • Boguslawski, Andrzej
  • Nowak, Dariusz

Abstract

The paper presents a numerical study of a medium size model of industrial gas turbine combustor. The research was conducted using the RANS (Reynolds Averaged Navier–Stokes) approach with k–∊ model and LES (Large Eddy Simulation) with WALE (Wall Adapting Local Eddy viscosity) subgrid model. The simulations were performed in cold and reacting flow conditions. In the latter case, the combustion process was modelled using a steady flamelet model with chemical mechanisms of Smooke with 16 species and 25 elementary reactions, and the GRI-2.11 with 49 species and 277 elementary reactions including NO chemistry. In the first part of the paper, the numerical results were validated against experimental data including velocity field, temperature and species concentrations. The velocity components predicted for the cold flow agree very well with measurements. In the case of the simulations of the reacting flow, some discrepancies were observed in both the temperature field and species concentrations. However, the main flame characteristics were captured correctly. It turned out that the chemical kinetics had a larger impact on the results than the turbulence model. In the second part of the paper, we modified the fuel and air injection method and analysed how the changes introduced affect the flame dynamics. It was shown that: (i) depending on the distribution of air, the velocity, temperature and species composition in the upper part of the combustion chamber can be significantly altered; (ii) more substantial changes can be achieved by shifting the fuel injection points; their location outside the main recirculation zone leads to a dangerous situation resulting in overheating of the walls; (iii) it turns out that substantial differences in the flame characteristics in the upper part of the combustion chamber vanish approaching the outlet plane and the resulting mixture compositions are very similar.

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  • 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.
    • Handle: RePEc:eee:appene:v:174:y:2016:i:c:p:153-165
    DOI: 10.1016/j.apenergy.2016.04.106
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    References listed on IDEAS

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    Cited by:

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    2. Li, Zhixiang & Xu, Hui & Feng, Jiangang & Chen, Huixiang & Kan, Kan & Li, Tianyi & Shen, Lian, 2024. "Fluctuation characteristics induced by energetic coherent structures in air-core vortex: The most complex vortex in the tidal power station intake system," Energy, Elsevier, vol. 288(C).
    3. Asgari, Behrad & Amani, Ehsan, 2017. "A multi-objective CFD optimization of liquid fuel spray injection in dry-low-emission gas-turbine combustors," Applied Energy, Elsevier, vol. 203(C), pages 696-710.
    4. Zhang, R.C. & Huang, X.Y. & Fan, W.J. & Bai, N.J., 2019. "Influence of injection mode on the combustion characteristics of slight temperature rise combustion in gas turbine combustor with cavity," Energy, Elsevier, vol. 179(C), pages 603-617.
    5. Kuban, Lukasz & Stempka, Jakub & Tyliszczak, Artur, 2019. "A 3D-CFD study of a γ-type Stirling engine," Energy, Elsevier, vol. 169(C), pages 142-159.
    6. 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.
    7. Wawrzak, Agnieszka & Caban, Lena & Tyliszczak, Artur & Mastorakos, Epaminondas, 2024. "Numerical analysis of turbulent nitrogen-diluted hydrogen flames stabilised by star-shaped bluff bodies," Applied Energy, Elsevier, vol. 364(C).
    8. Sadatakhavi, SeyedMohammadReza & Tabejamaat, Sadegh & EiddiAttarZade, Masoud & Kankashvar, Benyamin & Nozari, MohammadReza, 2021. "Numerical and experimental study of the effects of fuel injection and equivalence ratio in a can micro-combustor at atmospheric condition," Energy, Elsevier, vol. 225(C).
    9. Zhang, R.C. & Hao, F. & Fan, W.J., 2018. "Combustion and stability characteristics of ultra-compact combustor using cavity for gas turbines," Applied Energy, Elsevier, vol. 225(C), pages 940-954.
    10. Gurunadh Velidi & Chun Sang Yoo, 2023. "A Review on Flame Stabilization Technologies for UAV Engine Micro-Meso Scale Combustors: Progress and Challenges," Energies, MDPI, vol. 16(9), pages 1-44, May.

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