Abstract
The combination of a premixed flame from the main burner and a diffusion flame from the pilot burner is often used for industrial low NOx burners. However, an oscillatory combustion can occur rather easily and is a big problem with this method. To investigate the problem, the correlations between combustion conditions and pressure fluctuation levels are studied on a swirling flow type combustor burning natural gas. It is found from the observation that an oscillatory combustion tends to occur for the case of having the wide region of higher OH concentration.
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More From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
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