Publication de 6 numéros par an
ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110
Indexed in
Development of a Model for Turbulent Combustion within Porous Inert Media
RÉSUMÉ
Prior models for porous inert medium (PIM) burners have not been able to accurately predict burning speeds, CO emissions, and NOx emissions. All prior models for these burners have assumed laminar flow within the porous structure. However, there are reasons to believe that the flow within these burners is turbulent. Therefore, a turbulent PIM burner model has been developed. A one-equation k-ε. model is used to simulate the turbulent flow field. This model makes use of the fact that the pore size constrains the size of the largest turbulent eddies. Thus, the integral length scale, which is assumed to be a simple function of the pore size, is used to determine e. It is also assumed that the dominant effect of turbulence is enhancement of the transport properties. The increased transport properties result in broader flame zones, decreased gas temperatures, and increased burning rates. The decreased gas temperature results in decreased NOx emissions. The resulting predictions of the CO emissions are also improved.
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Chen Zhongshan, Shi Junrui, Xie Maozhao, Yue Meng, A Numerical Investigation on the Rapid Turbulent Filtration Combustion under High Background Pressure, Combustion Science and Technology, 2021. Crossref
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Jiang Linsong, Liu Hongsheng, Wu Dan, Wang Jiansheng, Xie Mao-Zhao, Bai Minli, Pore-Scale Simulation of Hydrogen–Air Premixed Combustion Process in Randomly Packed Beds, Energy & Fuels, 31, 11, 2017. Crossref
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Donoso-Garcia Pablo , Henriquez-Vargas Luis, NUMERICAL STUDY OF A RECIPROCAL FLOW POROUS MEDIA BURNER USING A TURBULENCE MODEL , International Journal of Fluid Mechanics Research, 49, 2, 2022. Crossref