NUMERICAL SIMULATION FOR CONFINED JETS OF SMALL AREA RATIO

摘要

Hybrid Finite Analytical Method (HFAM) and k-ε turbulence model are applied to the numerical simulation for the confined coaxial jets of super small area ratio. The calculated velocity profiles in different velocity ratio fit well with the experimental data. Also, distribution of streamlines in different velocity ratio is obtained. It is found that the velocity ratio has great effect on the occurrence of recirculation and its location.