Journal of Aeronautical Engineering

Journal of Aeronautical Engineering

Analysis of Liquid Fuel Spray and Combustive Flow Characteristics inside a Combustion Chamber

Document Type : Original Article

Author
Mohammad Sadegh Abedinejad
Assistant Professor of Department of Mechanical Engineering, Faculty of Engineering, Alzahra University, Tehran, Iran
10.22034/joae.2024.377135.1147
Abstract
The purpose of this paper is to analyze the combustion characteristics in the reactive flow inside an aero gas turbine model combustion chamber under different conditions of liquid fuel spray. In order to model the two-phase flow of fuel and gas droplets, the Euler-Lagrange approach and two-way connection between the gas phase and the droplets have been used. To solve the governing equations, the finite volume structured mesh has been used. The Reynolds Navier Stokes (RANS) averaging approach and discrete ordinate model have been used to simulate flow turbulence and radiative heat transfer. The steady flamelet reaction model and the probability density function have been employed to model the combustion and interaction between turbulent and reactive flow, respectively. Also, a chemical mechanism with 26 reactions and 17 species has been used to model the combustion of Jet-A fuel. NOx modeling has been done as a post-processing by the finite rate model. The results indicate that increasing the fuel spray velocity promotes combustion in the initial region and higher flame temperature, and finally increases the amount of NO pollutant. The smaller spray cone angle causes the droplets resulting from the spray will be concentrated in a smaller area and will reduce the NO pollutant.
Keywords
Combustion Chamber
Flamelet
NOx Emission
Spray Flow
Fuel Spray Condition

Subjects

  1. Durdina, L., J. Jedelsky, and M. Jicha, Investigation and comparison of spray characteristics of pressure-swirl atomizers for a small-sized aircraft turbine engine. International Journal of Heat and Mass Transfer, 2014. 78: p. 892-900.
  2. Broniarz-Press, L., et al., The effect of orifice shape and the injection pressure on enhancement of the atomization process for pressure-swirl atomizers. Crop Protection, 2016. 82: p. 65-74.
  3. Liu, C., et al., Experimental investigations of spray generated by a pressure swirl atomizer. Journal of the Energy Institute, 2019. 92(2): p. 210-221.
  4. Dafsari, R.A., et al., Viscosity effect on the pressure swirl atomization of an alternative aviation fuel. Fuel, 2019. 240: p. 179-191.
  5. Datta, A. and S. Som, Effects of spray characteristics on combustion performance of a liquid fuel spray in a gas turbine combustor. International journal of energy research, 1999. 23(3): p. 217-228.
  6. Kannaiyan, K. and R. Sadr, Experimental investigation of spray characteristics of alternative aviation fuels. Energy Conversion and Management, 2014. 88: p. 1060-1069.
  7. Chen, F., et al., Effects of fuel variation and inlet air temperature on combustion stability in a gas turbine model combustor. Aerospace Science and Technology, 2019. 92: p. 126-138.
  8. Shin, J., et al., Effects of the physical properties of fuel on spray characteristics from a gas turbine nozzle. Energy, 2020. 205: p. 118090.
  9. Kankashvar, B., et al., Experimental study of the effect of the spray cone angle on the temperature distribution in a can micro-combustor. Aerospace Science and Technology, 2021. 115: p. 106799.
  10. Sadatakhavi, S., et al., Numerical and experimental study of the effects of fuel injection and equivalence ratio in a can micro-combustor at atmospheric condition. Energy, 2021. 225: p. 120166.
  11. Ibrahim, I.A., et al., Numerical study of kerosene spray and combustion characteristics using an air-blast atomizer. Energy Reports, 2022. 8: p. 5974-5986.
  12. Wang, Z., et al., Experimental study on effects of prefilming and non-prefilming atomization on the combustion characteristics in a realistic full annular combustor. Fuel, 2023. 334: p. 126545.
  13. Cameron, C., et al., A detailed characterization of the velocity and thermal fields in a model can combustor with wall jet injection. Journal of Engineering for Gas Turbines and Power, 1989. 111(1): p. 31-35.
  14. Bazdidi-Tehrani, F., M.S. Abedinejad, and H. Yazdani-Ahmadabadi, Influence of Variable Air Distribution on Pollutants Emission in a Model Wall Jet Can Combustor. Heat Transfer Research, 2018. 49: p. 1667-1688.
  15. Abedinejad, M.S., F. Bazdidi-Tehrani, and S. Mirzaei, Investigation of turbulent flow structures in a wall jet can combustor: application of large eddy simulation. The European Physical Journal Plus, 2021. 136(6): p. 1-26.
  16. Abedinejad, M.S., Analysis of Liquid Fuel Spray in an Evaporating Chamber. Journal of Aeronautical Engineering, 2021.
  17. Gouesbet, G. and A. Berlemont, Eulerian and Lagrangian approaches for predicting the behaviour of discrete particles in turbulent flows. Progress in Energy and Combustion Science, 1999. 25(2): p. 133-159.
  18. Morsi, S. and A. Alexander, An investigation of particle trajectories in two-phase flow systems. Journal of Fluid mechanics, 1972. 55(2): p. 193-208.
  19. Sazhin, S.S., Advanced models of fuel droplet heating and evaporation. Progress in energy and combustion science, 2006. 32(2): p. 162-214.
  20. Abedinejad, M.S., Analysis of Spray Evaporation in a Model Evaporating Chamber: Effect of Air Swirl. Journal of Thermal Science, 2023: p. 1-17.
  21. Alemi, E. and M.R. Zargarabadi, Effects of jet characteristics on NO formation in a jet-stabilized combustor. International Journal of Thermal Sciences, 2017. 112: p. 55-67.
  22. Bazdidi-Tehrani, F., M.S. Abedinejad, and M. Mohammadi, Analysis of Relationship between Entropy Generation and Soot Formation in Turbulent Kerosene/Air Jet Diffusion Flames. Energy & Fuels, 2019.
  23. Bazdidi-Tehrani, F. and M.S. Abedinejad, Influence of incoming air conditions on fuel spray evaporation in an evaporating chamber. Chemical Engineering Science, 2018. 189: p. 233-244.
  24. Shih, T.-H., et al., A new k-ϵ eddy viscosity model for high reynolds number turbulent flows. Computers & fluids, 1995. 24(3): p. 227-238.
  25. Bazdidi-Tehrani, F., H. Yazdani Ahmadabadi, and M.S. Abedinejad, Analysis of Influence of Variable Airflow Distribution on Reactive Flow in a Gas Turbine Model Combustion Chamber. Fuel and Combustion, 2015. 8(2): p. 13-32.
  26. Bazdid tehrani, F., S. Mirzaee, and M.S. Abedinejad, Influence of Chemical Reaction Mechanisms on the Combustion Characteristics in a gas turbine model combustor. Fuel and Combustion, 2017. 9(2): p. 71-94.
  27. Bazdidi Tehrani, F., S. Mirzaei, and M.S. Abedinejad, Influence of number of laminar flame lets and their scalar dissipation rate on combustion characteristics in a gas turbine model combustor. Aerospace Knowledge and Technology Journal, 2017. 6(2): p. 55-71.
  28. Modest, M.F. and S. Mazumder, Radiative heat transfer. 2021: Academic press.
  29. Bazdidi-Tehrani, F., E. Sharifi-Sedeh, and M.S. Abedinejad, Effects of alumina nanoparticles on evaporation and combustion characteristics of diesel fuel droplets. Journal of the Taiwan Institute of Chemical Engineers, 2023. 143: p. 104713.
  30. Rahmanpour, M., R. Ebrahimi, and M. Shams, Numerically gas radiation heat transfer modeling in chemically nonequilibrium reactive flow. Heat and mass transfer, 2011. 47: p. 1659-1670.
  31. Mohammadi, M. and M.S. Abedinejad, Analysis of NO Formation and Entropy Generation in a Reactive Flow. Aerospace, 2022. 9(11): p. 666.
  32. Smith, T., Z. Shen, and J. Friedman, Evaluation of coefficients for the weighted sum of gray gases model. 1982.
  33. Launder, B.E. and D.B. Spalding, The numerical computation of turbulent flows, in Numerical prediction of flow, heat transfer, turbulence and combustion. 1983, Elsevier. p. 96-116.
  34. Cameron, C., J. Brouwer, and G. Samuelsen. A model gas turbine combustor with wall jets and optical access for turbulent mixing, fuel effects, and spray studies. in Symposium (International) on Combustion. 1989. Elsevier.

 

Journal of Aeronautical Engineering
Volume 26, Issue 1
August 2024
Pages 120-134

  • Receive Date 17 December 2022
  • Revise Date 19 June 2023
  • Accept Date 14 May 2024