Large Eddy Simulation of Confined Turbulent Round Jet with Annular Jets

Particular geometry is used to simulate numerically a confined turbulent jet. The purpose of this work is evaluate numerically the effect of annular jets above a central jet and define features of turbulence by analysis of anisotropy turbulence. Threedimensional large eddy simulation was used for turbulence modelling. Lumley-Newman triangle representation of anisotropy turbulence was used to define differences between numerical measures of local turbulence and 3D isotropic turbulence state.