Abstract: The turbulence properties of separation space in a cyclone were investigated by using the Laser Doppler Velocimetry. In some areas, such as inner vortex flow, vicinity of the wall,intersection between upward flow and downward flow,intersection of inner vortex flow and outer vortex flow, the distribution of turbulent intensity varied sharply, and turbulence was quite intense. It was concluded that turbulence was anisotropic. In inner vortex flow, near the discharge port and near the inlet of outlet tube, the distributions of Reynolds shear stress increased sharply. The distribution of turbulent viscosity coefficient also reflected this feature.

摘要： 采用激光多普勒测速系统测试了蜗壳式旋风分离器内的流场，分析了最主要的分离空间内湍流特性.内旋流区、排尘口附近、近壁处以及上下行流交界点和内外旋流交界点等处的湍流度变化非常剧烈，而且数值上也大得多.比较轴向和切向湍流度得知表明分离空间的湍流是各向异性的.Reynolds应力值在内旋流区大于外旋流区，而且在排尘口附近、排气管下口附近都有陡增，湍流黏性系数也反映了这个特点.