SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2021, Vol. 34 ›› Issue (6): 87-96.DOI: 10.1016/j.cjche.2020.09.061

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Pore-level numerical simulation of methane-air combustion in a simplified two-layer porous burner

Yang Liu1, Yangbo Deng1,2, Junrui Shi3, Rujie Xiao2, Houping Li3   

  1. 1 Marine Engineering College, Dalian Maritime University, Dalian 116026, China;
    2 Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China;
    3 School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
  • Received:2020-04-11 Revised:2020-08-12 Online:2021-08-30 Published:2021-06-28
  • Contact: Yangbo Deng
  • Supported by:
    The authors wish to acknowledge the support to this work by the National Natural Science Foundation of China (No. 51876107).

Pore-level numerical simulation of methane-air combustion in a simplified two-layer porous burner

Yang Liu1, Yangbo Deng1,2, Junrui Shi3, Rujie Xiao2, Houping Li3   

  1. 1 Marine Engineering College, Dalian Maritime University, Dalian 116026, China;
    2 Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China;
    3 School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
  • 通讯作者: Yangbo Deng
  • 基金资助:
    The authors wish to acknowledge the support to this work by the National Natural Science Foundation of China (No. 51876107).

Abstract: A simplified two-dimensional model of two-layer porous burner based on pore level is developed. The heat transfer of solid phase in porous burner is seen as the synergistic effects of conduction through connecting bridges and surface radiation between the solid particles in the model. A numerical simulation study on the characteristics of flow, combustion and heat transfer in the two-layer porous burner is carried out using the pore level model, and the effects of the control parameters such as the inlet velocity and solid thermal conductivity on thermal non-equilibrium are investigated. The results show that the flame structure is highly two-dimensional based on pore level. Obvious thermal non-equilibrium in the burner for the two phases and solid phase are observed, the largest temperature difference between the gas and solid phases is observed in combustion zone, while the temperature difference inside the solid particles is largest near the flame front. The results also reveal that thermal non-equilibrium of porous burner is much affected by the inlet velocity and solid thermal conductivity.

Key words: Numerical simulation, Porous media, Thermal non-equilibrium, Heat transfer, Thermal conductivity

摘要: A simplified two-dimensional model of two-layer porous burner based on pore level is developed. The heat transfer of solid phase in porous burner is seen as the synergistic effects of conduction through connecting bridges and surface radiation between the solid particles in the model. A numerical simulation study on the characteristics of flow, combustion and heat transfer in the two-layer porous burner is carried out using the pore level model, and the effects of the control parameters such as the inlet velocity and solid thermal conductivity on thermal non-equilibrium are investigated. The results show that the flame structure is highly two-dimensional based on pore level. Obvious thermal non-equilibrium in the burner for the two phases and solid phase are observed, the largest temperature difference between the gas and solid phases is observed in combustion zone, while the temperature difference inside the solid particles is largest near the flame front. The results also reveal that thermal non-equilibrium of porous burner is much affected by the inlet velocity and solid thermal conductivity.

关键词: Numerical simulation, Porous media, Thermal non-equilibrium, Heat transfer, Thermal conductivity