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Deposition processes of particles in duct airflow over a forward-facing step (FFS) were numerically studied by computational fluid dynamics method. Reynolds stress model with velocity fluctuation modification and discrete particle model with turbulent particle dispersion were developed to predict airflow fields and particle motions respectively. After grid independence study and numerical validation,...
This paper reviewed particle deposition behaviors and mechanisms in turbulent ventilation duct flows. The main theoretical prediction models, experimental techniques and numerical methods used to explore particle deposition were discussed and analyzed. It was observed that turbophoresis, Brownian diffusion, turbulent diffusion and gravitational settling are the main mechanisms of particle deposition...
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