Abstract
The axial cross section images of seeded air jet were taken using Nd:YAG Laser. Based on concentration fluctuation of these images, concentration integral scales were calculated and compared with velocity integral scales calculated from streamwise velocities measured by particle image velocimetry. As a result, concentration integral scales are smaller than velocity integral scales within the region that it was measured (s/D<54), and decrease rapidly in the range that s/Dis smaller than 20.
