Experimental and Numerical Study of Premixed Combustion within Porous Media

Abstract:

A transient numerical model and experimental study of combustion and heat transfer for methane and oxygen within a two-section porous burner are presented in this paper. It is found that the maximum flame velocity is influenced by the combined effects of extinction coefficient and convection heat transfer coefficient, and that the minimum flame velocities of ceramics with various pore densities have slight differences at different equivalence ratios, while maximum flame velocities have large differences. In addition, the flame velocity depends not only on the interfacial convection heat transfer, but also on the radiation heat transfer of the ceramic foams, which is in accordance with our numerical simulation. Meanwhile, the numerical research in the present paper indicates that radiation extinction coefficient or pores per inch is not the only reason to characterize the heat regeneration effect of ceramic foams.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 1572-1583
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.1572
• Online since: July 2012
• Authors: De Bo Li, Qi Sheng Xu, Yue Liang Shen, Zhi Yong Wen, Ya Ming Liu
• Keywords: Flame Flammability, Flame Stabilization, Heat Transfer, Numerical Simulation, Porous Burner

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