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Two-dimensional axisymmetric numerical study of the premixed combustion inside the porous media burner |
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| รหัสดีโอไอ | |
| Creator | 1. K. Vithean 2. J. Charoensuk 3. K. Hanamura 4. T. Sesuk 5. V. Lilavivat |
| Title | Two-dimensional axisymmetric numerical study of the premixed combustion inside the porous media burner |
| Publisher | Thai Society of Mechanical Engineers (TSME) |
| Publication Year | 2564 |
| Journal Title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| Journal Vol. | 9 |
| Journal No. | 1 |
| Page no. | JRAME-21-9-009 (p.1-10) |
| Keyword | CFD, Porous media combustion, Multiphysics simulation |
| URL Website | https://tci-thaijo.org/index.php/jrame/index |
| Website title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| ISSN | 2229-2152 |
| Abstract | Porous media combustion is one of the most efficient and has a wide-ranging application. Despite this, more investigation needs to be done in order to improve its efficiency and pollutant emission. In this research, the commercial simulation software is used to model and couple together the significant phenomena such as combustion, heat transfer, and fluid flow in porous media, which occur in this type of system. The free and porous media flow module was used to estimate fluid flow inside both fluid and porous media. Species formation and heat release during combustion were modeled by the transport of concentrated species module. Local thermal equilibrium was assumed for the energy equation and calculated by heat transfer in porous media module. Each physic was coupled together by two mechanismsfirst, reaction flow, which coupled together between free and porous media flow and transport of concentrated species. Finally, nonisothermal flow coupled free and porous media flow with heat transfer in porous media. The combustion chamber, which is entirely filled with aluminum oxide pellets, is created for two dimensional axisymmetric. Physics-controlled mesh with finer element size is applied to generate mesh by the software to meet the specified need for each physic. Combustion behavior, velocity and temperature profile, and species formation are achieved from this simulation study.Keywords:CFD, Porous media combustion, Multiphysics simulation1.INTRODUCTIONThe combustion of a hydrocarbon in porous media adds to the conventional burner, which produces high pollutant emission and low combustion efficiency, generate temperature higher than the adiabatic flame temperature. This is because the incoming fuel/air mixture gain some energy by heat recirculation from the reaction zone[1]. Thistype of combustion is commonly called excess enthalpy or super adiabatic combustion. Weinberg is one of the first researchers who introduced excess enthalpy burners through theoreticalanalysis[2]. Besides, this systemnot only generates high-temperature heat but also produces hydrogen via partial oxidation of methane for fuel cell applications [3].Heat, which is the by-product ofpartial oxidation, can supply steam reforming energy which currently plays the dominant source for industrial hydrogen generation. Despite its advantages, the development of flame characteristicsin porous media is essential in the research area. The topic can bewell predicted by using the simulation tools.* Corresponding author:V. LilavivantE-mail address: [email protected] |
