Direct Numerical Simulation of Interaction by Inclined Jets
Details
To develop the efficient method of jet mixing, direct numerical simulations of two inclined jets are carried out. After the jets collide with each other, it expands perpendicular direction to the plane on which two jets exist, and turbulence intensity is largely enhanced compared to that of the single round jet. Then in order to investigate the mechanism of collision of jets, Snap-shot POD (Proper Orthogonal Decomposition) is applied. It demonstrates that the large scale mode behaves like vortex rings on the plane through at the center of two jets, that is, the collision of jets means that the generation of such a large-scale structure take place in mixing.
