Instability of flame in micro-combustor under different external thermal environment

Wang Y.; Zhou Z.; Yang W.; Zhou J.; Liu J.; Wang Z.; Cen K.

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Instability of flame in micro-combustor under different external thermal environment

机译：不同外部热环境下微燃烧器火焰的不稳定性

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This experiment investigates the performance of a micro-combustor made of a quartz tube. Its surface heat loss is controlled by external wind, the wind temperature ranges from 277 to 1001. K. Compared with the cold wind at 277. K, warm wind at intermediate temperature of 380. K helps stabilize the flame. Because it decreases the surface heat loss, thus inhibits extinction. However, extremely hot wind of 1001. K makes blowout happen easily. The phenomenon is analyzed. The micro-flame retreats to the combustor inlet due to the enhanced heat recirculation at extremely hot wind, which induces insufficient preheating. Subsequently, blowout occurs.

机译：该实验研究了由石英管制成的微型燃烧器的性能。其表面热量损失受外部风控制，风温度范围为277至1001.K。与277. K的冷风相比，中等温度为380. K的暖风有助于稳定火焰。因为它减少了表面热损失，所以抑制了灭绝。但是，由于1001. K的极热风，很容易发生井喷。对该现象进行了分析。由于在极热的风中增强的热再循环，微火焰后退到燃烧器入口，从而导致预热不足。随后，发生井喷。

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来源
《Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics》 |2011年第7期|共7页
作者
Wang Y.; Zhou Z.; Yang W.; Zhou J.; Liu J.; Wang Z.; Cen K.;
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原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
Blowout; Flame stability; Heat loss; Hydrogen; Micro-combustors;

机译：井喷;火焰稳定性;热损失;氢;微型燃烧器;

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2. Instability of flame in micro-combustor under different external thermal environment [J] . Wang Y., Zhou Z., Yang W., Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics . 2011,第7期

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Instability of flame in micro-combustor under different external thermal environment

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