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Turbulent diffusion flames of a low-calorific value syngas under varying turbulator angles

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  • Ilbas, Mustafa
  • Karyeyen, Serhat

Abstract

This study investigates how changes in turbulator angles affect on combustion characteristics of a low calorific value syngas in a generated syngas burner integrated with a combustor. Turbulator angles were changed from 15° to 45° at intervals of 15°. Simulations have been performed by using a CFD code. PDF/Mixture Fraction combustion and k-ε standard turbulence models were used during the modellings. Temperature predictions of the syngas flame are compared with the existing temperature measurements. It is determined that these predictions are satisfactorily in good agreement with the measurements. Then, modellings were made under turbulator angles of 30° and 45° combustion conditions and compared with each other. It is revealed that change in turbulator angles affects highly the temperature, emission and velocity gradients of the syngas flame throughout the combustor whereas pressure drop is slightly influenced near the burner inlet zone. It is also concluded that the high temperature zone of the syngas flame moves to the upstream of the burner due to effect of the tangential velocity as the turbulator angle is increased. Predicted axial velocity values of the syngas flame decrease at the center of the combustor slightly because of the change in the turbulator angle.

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  • Ilbas, Mustafa & Karyeyen, Serhat, 2017. "Turbulent diffusion flames of a low-calorific value syngas under varying turbulator angles," Energy, Elsevier, vol. 138(C), pages 383-393.
    • Handle: RePEc:eee:energy:v:138:y:2017:i:c:p:383-393
    DOI: 10.1016/j.energy.2017.07.073
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    References listed on IDEAS

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    1. Bhaduri, S. & Contino, F. & Jeanmart, H. & Breuer, E., 2015. "The effects of biomass syngas composition, moisture, tar loading and operating conditions on the combustion of a tar-tolerant HCCI (Homogeneous Charge Compression Ignition) engine," Energy, Elsevier, vol. 87(C), pages 289-302.
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    Cited by:

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    2. Wan, Huaxian & Gao, Zihe & Ji, Jie & Zhang, Yongming & Li, Kaiyuan, 2018. "Experimental and theoretical study on flame front temperatures within ceiling jets from turbulent diffusion flames of n-heptane fuel," Energy, Elsevier, vol. 164(C), pages 79-86.
    3. Said, Syed A. & Aliyu, Mansur & Nemitallah, Medhat A. & Habib, Mohamed A. & Mansir, Ibrahim B., 2018. "Experimental investigation of the stability of a turbulent diffusion flame in a gas turbine combustor," Energy, Elsevier, vol. 157(C), pages 904-913.
    4. Kiedrzyńska, Aleksandra & Lewtak, Robert & Świątkowski, Bartosz & Jóźwiak, Piotr & Hercog, Jarosław & Badyda, Krzysztof, 2020. "Numerical study of natural gas and low-calorific syngas co-firing in a pilot scale burner," Energy, Elsevier, vol. 211(C).
    5. Zhien, Chai Yik & Al-attab, Khaled Ali, 2022. "Design optimization of trio concept combustor geometry for low-grade biomass producer gas combustion," Energy, Elsevier, vol. 238(PA).
    6. Junjie Chen & Longfei Yan & Wenya Song & Deguang Xu, 2018. "Catalytic Oxidation of Synthesis Gas on Platinum at Low Temperatures for Power Generation Applications," Energies, MDPI, vol. 11(6), pages 1-24, June.

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