استادیار گروه مهندسی مکانیک، دانشکده مهندسی، دانشگاه الزهرا، تهران، ایران
10.22034/joae.2024.377135.1147
چکیده
هدف از مقاله حاضر تحلیل مشخصههای احتراقی در جریان واکنشی درون محفظه احتراق مدل توربین گاز هوایی در شرایط مختلف پاشش سوخت مایع میباشد. جهت مدلسازی جریان دو فاز قطرات سوخت و گاز، از نگرش اویلر- لاگرانژ و اتصال دو طرفه بین فاز گاز و قطرات استفاده شده است. برای حل معادلات حاکم از شبکهبندی منظم حجم محدود استفاده شده است. رهیافت متوسطگیری رینولدز ناویر استوکس (RANS) و مدل جهات مجزاء برای شبیهسازی آشفتگی جریان و انتقال حرارت تشعشعی استفاده شده است. از مدل واکنش فلیملت پایا برای مدلسازی احتراق و تابع چگالی احتمال جهت مدلسازی برهمکنش بین جریان آشفته و واکنشی استفاده شده است. همچنین یک مکانیزم شیمیایی با 26 واکنش و 17 گونه برای مدلسازی احتراق سوخت Jet-A استفاده شده است. مدلسازی NOx به صورت پسپردازش توسط مدل نرخ محدود انجام شده است. نتایج حاکی از این است که افزایش سرعت پاشش اسپری سوخت موجب ترویج احتراق در ناحیه اولیه و دمای شعله بالاتر میشود و نهایتا موجب افزایش مقدار آلاینده NO میشود. هرچقدر زاویه پاشش کوچکتر باشد قطرههای حاصل از پاشش در ناحیهی کوچکتری متمرکز میشوند و موجب کاهش آلاینده NO میشود.
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.
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.
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.
Dafsari, R.A., et al., Viscosity effect on the pressure swirl atomization of an alternative aviation fuel. Fuel, 2019. 240: p. 179-191.
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.
Kannaiyan, K. and R. Sadr, Experimental investigation of spray characteristics of alternative aviation fuels. Energy Conversion and Management, 2014. 88: p. 1060-1069.
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.
Shin, J., et al., Effects of the physical properties of fuel on spray characteristics from a gas turbine nozzle. Energy, 2020. 205: p. 118090.
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.
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.
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.
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.
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.
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.
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.
Abedinejad, M.S., Analysis of Liquid Fuel Spray in an Evaporating Chamber. Journal of Aeronautical Engineering, 2021.
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.
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.
Sazhin, S.S., Advanced models of fuel droplet heating and evaporation. Progress in energy and combustion science, 2006. 32(2): p. 162-214.
Abedinejad, M.S., Analysis of Spray Evaporation in a Model Evaporating Chamber: Effect of Air Swirl. Journal of Thermal Science, 2023: p. 1-17.
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.
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.
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.
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.
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.
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.
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.
Modest, M.F. and S. Mazumder, Radiative heat transfer. 2021: Academic press.
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.
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.
Mohammadi, M. and M.S. Abedinejad, Analysis of NO Formation and Entropy Generation in a Reactive Flow. Aerospace, 2022. 9(11): p. 666.
Smith, T., Z. Shen, and J. Friedman, Evaluation of coefficients for the weighted sum of gray gases model. 1982.
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.
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.
