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Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach

Author

Listed:
  • Mehdi Bidabadi

    (School of Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114, Iran)

  • Peyman Ghashghaei Nejad

    (School of Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114, Iran)

  • Hamed Rasam

    (School of Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114, Iran)

  • Sadegh Sadeghi

    (School of Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114, Iran)

  • Bahman Shabani

    (School of Engineering, RMIT University, Melbourne, VIC 3083, Australia)

Abstract

Due to the safe operation and stability of non-premixed combustion, it can widely be utilized in different engineering power and medical systems. The current paper suggests a mathematical asymptotic technique to describe non-premixed laminar flow flames formed in organic particles in a counter-flow configuration. In this investigation, fuel and oxidizer enter the combustor from opposite sides separately and multiple zones including preheating, vaporization, flame and post-flame zones were considered. Micro-sized lycopodium particles and air were respectively applied as a biofuel and an oxidizer. Dimensionalized and non-dimensionalized mass and energy conservation equations were determined for the zones and solved by Mathematica and Matlab software by applying proper boundary and jump conditions. Since lycopodium particles have numerous spores, the porosity of the particles was involved in the equations. Further, significant parameters such as lycopodium vaporization rate and thermophoretic force corresponding to the lycopodium particles in the solid phase were examined. The temperature distribution, flame sheet position, fuel and oxidizer mass fractions, equivalence ratio and flow strain rate were evaluated for the counter-flow non-premixed flames. Ultimately, the thermophoretic force caused by the temperature gradient at different positions was computed for several values of porosity, fuel and oxidizer Lewis numbers.

Suggested Citation

  • Mehdi Bidabadi & Peyman Ghashghaei Nejad & Hamed Rasam & Sadegh Sadeghi & Bahman Shabani, 2018. "Mathematical Modeling of Non-Premixed Laminar Flow Flames Fed with Biofuel in Counter-Flow Arrangement Considering Porosity and Thermophoresis Effects: An Asymptotic Approach," Energies, MDPI, vol. 11(11), pages 1-25, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:2945-:d:178967
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    References listed on IDEAS

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    1. Ali Shamooni & Alberto Cuoci & Tiziano Faravelli & Amsini Sadiki, 2018. "Prediction of Combustion and Heat Release Rates in Non-Premixed Syngas Jet Flames Using Finite-Rate Scale Similarity Based Combustion Models," Energies, MDPI, vol. 11(9), pages 1-20, September.
    2. Zhongya Xi & Zhongguang Fu & Xiaotian Hu & Syed Waqas Sabir & Yibo Jiang, 2018. "An Experimental Investigation on Flame Pulsation for a Swirl Non-Premixed Combustion," Energies, MDPI, vol. 11(7), pages 1-17, July.
    3. Zhongya Xi & Zhongguang Fu & Xiaotian Hu & Syed Waqas Sabir & Yibo Jiang, 2018. "An Investigation on Flame Shape and Size for a High-Pressure Turbulent Non-Premixed Swirl Combustion," Energies, MDPI, vol. 11(4), pages 1-20, April.
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    Cited by:

    1. Wei-Hsin Chen & Keat Teong Lee & Hwai Chyuan Ong, 2019. "Biofuel and Bioenergy Technology," Energies, MDPI, vol. 12(2), pages 1-12, January.

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