난류 충돌 원형 분류 유동에서의 입자운동에 대한 수치적 연구

Abstract

Particle motions in turbulent impinging round jet flow are numerically studied. It is assumed that the gas-particle flow is one way coupled. The gas flow field is solved using a standard k-ε model and the wall function model for the boundary conditions. Lagrangian approach is used for the particle momentum equation, since the gas flow field has the high acceleration region near the impinging region. LSD model is applied to account the gas flow fluctuation effect on the particle motion. The results say that the effect of the turbulence characteristics on the particle motion is not negligible but it is less important than that of the mean flowmetric and geometric conditions.