Volume 3, Issue 1, January 2015, Page: 24-27
Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability
Zafar Namazian, Faculty of Engineering, Department of Mechanical Engineering, Yasouj Branch, Islamic Azad University, Yasouj, Iran
Heidar Hashemi, Department of Mechanical Engineering, College of Engineering, Yasouj University, Yasouj, Iran
Jafar Namazian, Faculty of Engineering, Department of Mechanical Engineering, Yasouj Branch, Islamic Azad University, Yasouj, Iran
Received: Oct. 13, 2014;       Accepted: Dec. 30, 2014;       Published: Jan. 23, 2015
DOI: 10.11648/j.ijsts.20150301.13      View  2686      Downloads  139
Abstract
In this work, the computational fluid dynamics is used to model a micro torch. This is to investigate the effect of wall conductivity for different operating conditions on combustion characteristics as well as flame stability. The effect of convective heat transfer coefficient on the flame stability, out of the burner, is also studied. The results show that the wall conductivity and the convective heat transfer coefficient are very important to determine heat transfer to upstream. Finally, it is observed that if intermediate conductivity value of a wall is used, it can produce more stable combustion flame. In contrary, in very low and high conductivity, the flame becomes unstable. If the convective heat transfer coefficient of the outer fluid increases, flame becomes unstable again.
Keywords
Flame Stability, Micro Channel, Thermal Conductivity, Combustion
To cite this article
Zafar Namazian, Heidar Hashemi, Jafar Namazian, Combustion in Micro Channel Investigating the Effect of Wall Thermal Conductivity of Micro-Channels on Flame Stability, International Journal of Science, Technology and Society. Vol. 3, No. 1, 2015, pp. 24-27. doi: 10.11648/j.ijsts.20150301.13
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