Research on the particle dispersion in the particulate two-phase round jet

In this paper, the three-dimensional carter filament method was used to sim ulate the evolution Of vortex structures in the axisymmetric round jet. The results agree well with the ones given by Chung and Troutt. Then one-coupl ing model was employed to calculate the particle motion based on the comput ed flows. The results show that the particle motion is affected by flows ob viously at the case of particle number St much less than 1 and negligibly a t St much greater than 1, particles distribute around the vortex structures uniformly at St similar to 1. When perturbations with,wavenumber 5 are int roduced to vortex rings, particles disperse wider along radial direction, w hich conforms to the experimental results. The degree of particle dispersio n is lit the direct ratio to the amplitude of perturbation. The conclusions given ill the paper are useful to the practice usage.