Large-eddy simulation of flow and combustion dynamics in a lean partially premixed swirling combustor

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• 作者：Shaoshuai Li^a ; Yunzhe Zheng^a ; Min Zhu^a ; ^{zhumin@mail.tsinghua.edu.cn} ; Daniel Mira Martinez^b ; Xi Jiang^c
• 关键词：LES ; Lean partially premixed ; Swirling flows ; Combustion dynamics ; NOx
• 刊名：Journal of the Energy Institute
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：90
• 期：1
• 页码：120-131
• 全文大小：2968 K
• 卷排序：90

文摘

Flow and combustion dynamics in a lean partially premixed swirling combustor are investigated using LES method. Intrinsic effects of swirl vanes and counter flows on vortex developments are carefully analysed. Modified flame index and Fourier spectra analysis are applied to study combustion regime and instability phenomenon. The effects of swirl number, equivalence ratio and N2 dilution on combustion dynamics and NOx emissions are analysed.