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.

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Published

2021-10-09

How to Cite

Magdy, M., Kamal, M., Hamed, A. M., Hussin, A. E., & Aboelsoud, W. (2021). Numerical and Experimental Study of Inverse Diffusion LPG-Air Flames Pulsation. European Journal of Computational Mechanics, 30(2-3), 169–196. https://doi.org/10.13052/ejcm2642-2085.30232

Issue

2021: Vol 30 Iss 2-3

Section

Original Article

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