【摘 要】
：
为研究加热炉内平焰烧嘴下方燃烧速度场的主要机理,采用相似和模化理论建立了冷态实验模型。应用粒子激光测速(PIV)技术对旋流强度为1.76、空燃比分别为13.68、19.39、21.67
【机 构】
：
江苏工业学院机械系,内蒙古科技大学能源与环境学院,内蒙古科技大学能源与环境学院,内蒙古科技大学能源与环境学院,内蒙古科技大学能源与环境学院 江苏常州213016,内蒙古包头014010,内蒙古包头01
论文部分内容阅读
为研究加热炉内平焰烧嘴下方燃烧速度场的主要机理,采用相似和模化理论建立了冷态实验模型。应用粒子激光测速(PIV)技术对旋流强度为1.76、空燃比分别为13.68、19.39、21.67的烧嘴下方的湍流速度场进行了测量,得到了主燃烧区域速度场的分布特性,并分析了空燃比对速度场的影响规律,得到了回流区顶部宽度、径向速度最大值出现的位置随空燃比的变化趋势,同时也得知径向速度最大值、轴向速度最大值均随着空燃比的增大而增大。首次得出不同空燃比下速度分量的最大值沿射流长度衰减的无因次曲线。
In order to study the main mechanism of the combustion velocity field below the flat-flame burner in a heating furnace, a cold experimental model was established by using the similar and modular theory. The turbulent velocity field under the burner with swirling intensity of 1.76 and air-fuel ratio of 13.68, 19.39 and 21.67 respectively was measured by using Particle Laser Velocimetry (PIV) technique. The distribution characteristics of velocity field in the main combustion zone were obtained and analyzed Air-fuel ratio on the velocity field, get the top of the recirculation zone width, radial velocity maximum position with the air-fuel ratio trends, but also that the maximum radial velocity, the maximum axial velocity are as empty Fuel ratio increases and increases. For the first time, the maximum value of the velocity component under different air-fuel ratio decayed along the length of the jet without a dimensionless curve.
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