PIV Measurements of the Turbulence Integral Length Scale on Cold Combustion Flow Field of Tangential Firing Boiler
The process of the pulverized coal combustion in tangential firing boiler has prominent significance on improving boiler operation efficiency and reducing NOx emission.This paper aims at researching complex turbulent vortex coherent structure formed by the four corners jets in the burner zone,a cold experimental model of tangential firing boiler has been built.And by employing spatial correlation analysis method and PIV (Particle Image Velocimetry) technique,the law of Vortex scale distribution on the three typical horizontal layers of the model based on the turbulent Integral Length Scale (ILS) has been researched.According to the correlation analysis of ILS and the temporal average velocity,it can be seen that the turbulent vortex scale distribution in the burner zone of the model is affected by both jet velocity and the position of wind layers,and is not linear with the variation of jet velocity.The vortex scale distribution of the upper primary air is significantly different from the others.Therefore,studying the ILS of turbulent vortex integral scale is instructive to high efficiency cleaning combustion of pulverized coal in theory.
PIV Turbulent Vortex Tangential Firing Boiler Cold Experimental Model Integral Length Scale (ILS)
WU Wen-fei XIE Jing-xing GONG Zhi-jun LI Bao-wei
Inner Mongolia Key Laboratory for Utilization of Bay an Obo Multi-Metallic Resources: Elected State Inner Mongolia Key Laboratory for Utilization of Bay an bo Multi-Metallic Resources: Elected State K
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
63-66
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）