A simplified numerical approach to hydrogen and hydrocarbon combustion in single and double-layer porous burners |
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| Affiliation: | 1. Department of Mechanical and Materials Engineering, Military Institute of Engineering, Rio de Janeiro, 22290270, Brazil;2. Mechanical Engineering Department, Engineering Faculty, Trakya University, Edirne, 22030, Turkey;1. Mechanical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran;2. Center of Excellence on Modelling and Control Systems, (CEMCS), Ferdowsi University of Mashhad, Iran;3. School of Mechanical Engineering, Pusan National University, Busan 46241, Republic of Korea;1. Faculty of Chemical Engineering, Sahand University of Technology, 5331817634, Sahand New Town, Tabriz, Iran;2. Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, 14665/137, Tehran, Iran;1. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, China;2. College of Chemistry and Chemical Engineering, Ningxia Normal University, Ningxia, China |
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| Abstract: | Motivated by the fuel hydrogen applications in porous combustors, as well as hydrogen production in syngas porous devices, this work shows a simplified one-dimensional, steady state heat and mass transfer model for stabilized premixed flames in porous inert media. Single-layer and double-layer porous burner are studied. The model has three conservation equations, describing the heat transfer in the solid and fluid phases and the mass transfer in the reacting flow. The model considers a plug flow and is solved numerically by using the finite volume method. The results are compared with benchmark data, depicting the superadiabatic flames and the heat recirculation process. A parametric analysis of the model reveals the effects of the porous media properties and the Lewis and Peclet numbers on the heat and mass transfer processes. Furthermore, the effects of the flame stand-off parameter in double layer porous burner are also analyzed. The results have considered the values of the dimensionless parameters based on reference data for hydrogen/air and methane/air combustion in porous burners built with SiC and Al2O3. |
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| Keywords: | Porous media Premixed flame Superadiabatic Combustion |
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