Generation mechanisms of tube vortex in methane-assisted pulverized coal swirling flames

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• 作者：Yonmo Sung ; Minsung Choi ; Sangmin Lee ; Gwangseop Lee ; Minho Shin ; Gyungmin Choi ; ^{choigm@pusan.ac.kr} ; Duckjool Kim
• 关键词：Non-intrusive diagnostics ; Swirl-stabilized flame ; Tube vortex ; Internal recirculation zone ; Flame structure ; Pulverized coal combustion
• 刊名：Fuel Processing Technology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：156
• 期：Complete
• 页码：228-234
• 全文大小：1383 K
• 卷排序：156

文摘

The generation mechanisms of a tube vortex in swirl-stabilized pulverized coal-methane flames are elucidated. Particle image velocimetry and Mie scattering are used to investigate the flame structures. The flame is divided into three regions: the IRZ zone, transition zone between the IRZ and ETV, and ETV zone. The ETV has a hollow-tube structure, and its behavior depends on the swirl intensity of the burner.