CATEGORY: MICROCHANNELS
Applied Mechanics and Materials (Volume 302)
Pages 49-54, DOI 10.4028/www.scientific.net/AMM.302.49 (2013)
The
Effect of Radiation on Oxy-Fuel Combustion Characteristics in Microchannels
Rached Ben-Mansour, Mohamed A. Habib, Pervez Ahmed
Abstract
Thermal
radiation is important in heat transfer mechanism in many micro combustion
systems. Unfortunatley, a quantitative understanding on the radiation heat
transfer in relatively small scale laminar diffusion flames in microchannels is
lacking.
Authors describe a two dimensional model used to investigate the
effects of radiation on oxy-fuel combustion characteristics in microchannels.
They employ the discrete-ordinates radiation model. They note that excluding
radiation model results in the over-prediction of combustion temperatures in
the micro-reactor. Furthermore, they observe that the overall reaction rate and
its peak value increase when accounting for radiative heat transfer, despite
the decrease in temperature caused by radiation. Consequently, it is important
to incorporate a radiation heat transfer model in combustion micro-systems in
order to predict their characteristics accurately.
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