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http://dx.doi.org/10.3795/KSME-B.2005.29.12.1352

Numerical Study of Combustion Characteristics Inside a Micro-Tube Combustor  

Oh Chang Bo (한국기계연구원 에너지기계연구센터)
Choi Byung Il (한국기계연구원 에너지기계연구센터)
Han Yong Shik (한국기계연구원 에너지기계연구센터)
Kim Myung Bae (한국기계연구원 에너지기계연구센터)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.12, 2005 , pp. 1352-1359 More about this Journal
Abstract
Unsteady simulations were performed to investigate the flame structure and the dynamic behavior of a premixed flame exposed to the wall heat loss. A 3-step global reaction mechanism was adopted in this study. Simulations were performed for two tube combustors with inner diameters($d_i$) of 1mm and 4mm. The material of tube combustor was assumed to be a Silicon Nitride($Si_{3}N_4$). The heat loss from the outer tube wall was controlled by adjusting the amount of convective and radiative heat loss. A conical premixed flame could be stabilized inside a tube of $d_i=4mm$. The flame stability inside a tube of $d_i=4mm$ combustor was not much sensitive to the amount of heat loss. In case of a tube of $d_i=1mm$, an oscillating flame was observed in very low heat loss condition and a flame could not be sustained in realistic heat loss condition.
Keywords
Micro-tube; Flame Quenching; Flame Stability; Heat Loss Effect;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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