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A Multi-Scale Numerical Model for Investigation of Flame Dynamics in a Thermal Flow Reversal Reactor

Author

Listed:
  • Jia Li

    (School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China)

  • Ming-Ming Mao

    (School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China)

  • Min Gao

    (School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China)

  • Qiang Chen

    (School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China)

  • Jun-Rui Shi

    (School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China)

  • Yong-Qi Liu

    (School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China)

Abstract

In this paper, the flame dynamics in a thermal flow reversal reactor are studied using a multi-scale model. The challenges of the multi-scale models lie in the data exchanges between different scale models and the capture of the flame movement of the filtered combustion by the pore-scale model. Through the multi-scale method, the computational region of the porous media is divided into the inlet preheating zone, reaction zone, and outlet exhaust zone. The three models corresponding to the three zones are calculated by volume average method, pore-scale method, and volume average method respectively. Temperature distribution is used as data for real-time exchange. The results show that the multi-scale model can save computation time when compared with the pore-scale model. Compared with the volumetric average model, the multi-scale model can capture the flame front and predict the flame propagation more accurately. The flame propagation velocity increases and the flame thickness decreases with the increase of inlet flow rates and mixture concentration. In addition, the peak value of the initial temperature field and the width of the high-temperature zone also affect the flame propagation velocity and flame thickness.

Suggested Citation

  • Jia Li & Ming-Ming Mao & Min Gao & Qiang Chen & Jun-Rui Shi & Yong-Qi Liu, 2022. "A Multi-Scale Numerical Model for Investigation of Flame Dynamics in a Thermal Flow Reversal Reactor," Energies, MDPI, vol. 15(1), pages 1-24, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:1:p:318-:d:716864
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    References listed on IDEAS

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    1. Uddin, Noim & Blommerde, Mascha & Taplin, Ros & Laurence, David, 2015. "Sustainable development outcomes of coal mine methane clean development mechanism Projects in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 45(C), pages 1-9.
    2. Wang, Guanqing & Tang, Pengbo & Li, Yuan & Xu, Jiangrong & Durst, Franz, 2019. "Flame front stability of low calorific fuel gas combustion with preheated air in a porous burner," Energy, Elsevier, vol. 170(C), pages 1279-1288.
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