抄録
Direct numerical simulation is performed for a two-dimensional turbulent jet dispersed by sphere particles in the jet core region. The temporary evolving jet in a periodic domain is solved by the Fourier Spectral method. The particle is treated by the immersed boundary to consider the fluid disturbance from the sphere particles. The Reynolds number based on the initial jet-half width is 1500. The simulation is made for six cases including the pure-jet case. In cases of the dispersed jet, the particle diameter is changed at 0.5 and 0.7 and the density ratio from 2.0 to 10.0. The 1923 grids are tried to be used to check the grid dependency. The results from 1923 grids are not essentially different from 1443 grids. The 1443 grids are used as a standard mesh. These calculations showed that the dispersion of the fluid and the development were hasty by particles.
