Numerical and Experimental Study of Inverse Diffusion LPG-Air Flames Pulsation

Authors

  • Mahmoud Magdy Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt
  • Mahmoud Kamal Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt
  • Ashraf Mostafa Hamed Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt
  • Ahmed Eldein Hussin Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt
  • W. Aboelsoud Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt

DOI:

https://doi.org/10.13052/ejcm2642-2085.30232

Abstract

This study uses Ansys 16 commercial package to investigate an accurate numerical model that can trace the flame shape from inverse diffusion combustion of LPG with a focus on the effect of air pulsation on the combustion characteristics. The simulation is based on solving the energy, mass and momentum equations. The large eddy simulation turbulence model and the non-premixed combustion model are used to simulate the pulsating combustion reaction flows in a cylindrical chamber with an air frequency of 10,20,50,100 and 200 rad/sec. The numerical results are in great agreement with the experimental results in the flame shape and the temperature distribution along the combustion chamber in both pulsating and non-pulsating combustion. Diffusion combustion responds positively to pulsating combustion and increases mixing in the reaction zone. Increasing the air frequency increases the temperature fluctuations, the peak turbulent kinetic energy and maximum velocity magnitude, respectively, by 27.3%, 300%, and 200%. Increasing the Strouhal number to 0.23 shortens the flame by 40% and reduces nitric oxide and carbon monoxide by 12% and 40%, respectively, including an environmentally friendly combustion product. The maximum average temperature dropped from 1800 K to 1582 K with a very homogeneous temperature distribution along the combustion chamber which is very important for furnaces.

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Author Biographies

Mahmoud Magdy, Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt

Mahmoud Magdy received the bachelor’s degree in mechanical engineering from military technical college in 2012, the master’s degree in mechanical power department from Ain shams University in 2018.

Mahmoud Kamal, Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt

Mahmoud Kamal Head of Mechanical Power Engineering Department, Ain Shams University.

Ashraf Mostafa Hamed, Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt

Ashraf Mostafa Hamed graduated in 2003 from the Mechanical Power Engineering department at Ain Shams University. He joined the same department as a demonstrator and finished his MSc in Mechanical Engineering from the same department in 2007. Then, he joined Egypt-Japan University for Science and Technology as PhD student in 2010. Then, he joined Aalto University in Finland as PhD student in 2012. Having obtained his PhD, he was appointed at Ain Shams University in 11/27/2013 as an assistant professor. Currently, He is an associate professor and his research activities are focused on combustion, thermo-fluids, wind energy, turbo-machinery, Turbulent Flow Modelling and Computational Fluid Dynamics (CFD).

Ahmed Eldein Hussin, Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt

Ahmed Eldein Hussin is an associate professor at Ain Shams University, Mechanical Power Engineering. His research activities are in the field of thermo-fluid engineering. Currently, he is a co-principal investigator in a joint research project between Ain Shams University and University of Northumbria, the UK, and funded by the British Council and Science & Technology Development Fund. PhD Combustion of Renewable Fuels in Engines, 2013, School of Mech. Eng., Uni. of Leeds, UK. MSc Mechanical Power Engineering, 2006, Faculty of Engineering, Ain Shams University, Egypt. BSc Mechanical Power Engineering, 2001, Faculty of Engineering, Ain Shams University, Egypt. (Distinction with honour degree).

W. Aboelsoud, Department of Mechanical Power Engineering, Faculty of Engineering, Ain Shams University, Abdo Basha, El Sarayat St., 1, Cairo, Egypt

W. Aboelsoud earned his Ph.D. degree from the University of Central Florida, Orlando, FL, USA on May 2013. His research interests are in the advances in renewable energy, energy efficiency and transport phenomena. He is the coordinator of the Mechanical Power Engineering program at Ain Shams University, Cairo, Egypt.

References

Rayleigh, L.J.R.I.P., The explanation of certain acoustical phenomena. J Roy. Inst. Proc., 1878. 8: p. 536–542.

Putnam, A., et al., Pulse combustion. J Progress in energy combustion science, 1986. 12(1): p. 43–79.

Dec, J.E., et al., Heat transfer enhancement in the oscillating turbulent flow of a pulse combustor tail pipe. J International journal of heat mass transfer, 1992. 35(9): p. 2311–2325.

Dubey, R., et al., The effect of acoustics on an ethanol spray flame in a propane-fired pulse combustor. J Combustion Flame, 1997. 110(1-2): p. 25–38.

Rocha, A.M.A., J.A. Carvalho Jr, and P.T.J.F. Lacava, Gas concentration and temperature in acoustically excited Delft turbulent jet flames. J Fuel, 2008. 87(15–16): p. 3433–3444.

Balachandran, R., et al., Experimental investigation of the nonlinear response of turbulent premixed flames to imposed inlet velocity oscillations. J Combustion Flame, 2005. 143(1–2): p. 37–55.

Liu, X., C. Cao, and Z.J.D.T. Lang, Heat transfer between materials and unsteady airflow from a Helmholtz type combustor. J Drying Technology, 2001. 19(8): p. 1939–1948.

El Behery, R., et al., Combustion enhancement of a gas flare using acoustical excitation. Combustion science technology, 2005. 177(9): p. 1627–1659.

Loretero, M.E., R.F.J.J.o.e.f.g.t. Huang, and power, Effects of acoustic excitation on a swirling diffusion flame. Journal of engineering for gas turbines power, 2010. 132(12).

Hardalupas, Y., A.J.P.i.e. Selbach, and c. science, Imposed oscillations and non-premixed flames. J Progress in energy combustion science, 2002. 28(1): p. 75–104.

Saqr, K.M., et al., Effect of free stream turbulence on NOx and soot formation in turbulent diffusion CH4-air flames. J International Communications in Heat Mass Transfer, 2010. 37(6): p. 611–617.

Kitchen, J.A., Pulse combustion apparatus. 1987, Google Patents.

Hamed, A., et al., Single and Double Flow Pulsations of Normal and Inverse Partially Premixed Methane-Air Flames. Combustion Science and Technology, 2020: p. 1–31.

Sawarkar, P., T. Sundararajan, and K.J.A.T.E. Srinivasan, Effects of externally applied pulsations on LPG flames at low and high fuel flow rates. J Applied Thermal Engineering, 2017. 111: p. 1664–1673.

Benelli, G., et al., Advances in numerical simulation of pulsating combustion at ENEL. J Combustion science technology, 1993. 94(1–6): p. 317–335.

Mahmoud Magdy, M.M.K., Ashraf M. Hamed, Ahmed Eldein Hussin and Walid Aboelsoud Torky, Study the Effect of Air Pulsation on the Flame Characteristics. European Journal of Computational Mechanics, 2021. 29(2–3): p. 279–302.

Janicka, J. and A.J.P.o.t.C.I. Sadiki, Large eddy simulation of turbulent combustion systems. J Proceedings of the Combustion Institute, 2005. 30(1): p. 537–547.

Pitsch, H.J.A.R.F.M., Large-eddy simulation of turbulent combustion. J Annu. Rev. Fluid Mech., 2006. 38: p. 453–482.

Guo, Z., et al., Presumed joint probability density function model for turbulent combustion?. J Fuel, 2003. 82(9): p. 1091–1101.

Khelil, A., et al., Prediction of a high swirled natural gas diffusion flame using a PDF model. J Fuel, 2009. 88(2): p. 374–381.

Colucci, P., et al., Filtered density function for large eddy simulation of turbulent reacting flows. J Physics of Fluids, 1998. 10(2): p. 499–515.

Jaberi, F., et al., Filtered mass density function for large-eddy simulation of turbulent reacting flows. J Journal of Fluid Mechanics, 1999. 401: p. 85–121.

Dong, L., C.S. Cheung, and C.W.J.E. Leung, Combustion optimization of a port-array inverse diffusion flame jet. J Energy, 2011. 36(5): p. 2834–2846.

Larsson, A., et al., Skeletal methane–air reaction mechanism for large eddy simulation of turbulent microwave-assisted combustion. J Energy Fuels, 2017. 31(2): p. 1904–1926.

Navarro-Martinez, S., et al., Conditional moment closure for large eddy simulations. J Flow, Turbulence Combustion, 2005. 75(1–4): p. 245–274.

Bhaya, R., et al., Large eddy simulation of mild combustion using pdf-based turbulence–chemistry interaction models. J Combustion science technology, 2014. 186(9): p. 1138–1165.

ANSYS, F.I., Fluent, A.N.S.Y.S Theory Guide 15. 2013.

Burke, S., T.J.I. Schumann, and E. Chemistry, Diffusion flames. J Industrial Engineering Chemistry, 1928. 20(10): p. 998–1004.

Bilger, R.J.C.s. and technology, The structure of diffusion flames. J Combustion science technology, 1976. 13(1–6): p. 155–170.

Kim, S.H., K.Y.J.C. Huh, and flame, Second-order conditional moment closure modeling of turbulent piloted jet diffusion flames. J Combustion flame, 2004. 138(4): p. 336–352.

Yılmaz, Ý., et al., Effect of turbulence and radiation models on combustion characteristics in propane–hydrogen diffusion flames. J Energy conversion management, 2013. 72: p. 179–186.

Lai, C.H., J.H. Reibenspies, and M.Y.J.A.C.I.E.I.E. Darensbourg, Thiolate bridged nickel–iron complexes containing both iron (0) and iron (II) carbonyls. J Angewandte Chemie International Edition in English, 1996. 35(20): p. 2390–2393.

Liu, T., et al., Large Eddy Simulation Analysis on Confined Swirling Flows in a Gas Turbine Swirl Burner. J Energies, 2017. 10(12): p. 2081.

Dhembare, A.J.A.O.A.S.R., Bitter truth about fruit with reference to artificial ripener. J Archives of applied science research, 2013. 5(5): p. 45–54.

Hosseini, A.A., et al., Numerical study of inlet air swirl intensity effect of a Methane-Air Diffusion Flame on its combustion characteristics. J Case Studies in Thermal Engineering, 2020. 18: p. 100610.

Guessab A., A.A., Baki T., and Bounif A, The Effects Turbulence Intensity on NOx Formation in Turbulent Diffusion Piloted Flame (Sandia Flame D). Recent Advances in Mechanical Engineering and Mechanics, 2011. 144–50.

Published

2021-10-09

Issue

Section

Original Article

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