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采用ＰＤＡ测量系统对四角切圆燃烧锅炉垂直浓淡煤粉燃烧方式下炉内湍流特性进行了实验研究和频谱分析。结果表明，一次风射流由于与上游横向射流的相互作用，在背火侧形成尾迹涡，在向火侧形成剪切涡。
A PDA measurement system was used to study the turbulent characteristics of the turbulent flow in the vertical briquette pulverized coal combustion of the tangentially fired boiler and the frequency spectrum analysis. The results show that the primary air jet forms a wake vortex on the backfire side and a shear vortex on the fire side due to the interaction with the upstream transverse jet.