AEROSOL-PARTICLE DEPOSITION IN A RECIRCULATION REGION

Digital simulation results concerning aerosol particle transport and d eposition in a recirculation region are presented. It is assumed that the particles are shed from sources near the back face of a block in a turbulent duct flow. The results show that a large number of particle s may be captured by the block and the upper wall of the channel due t o impaction and interception. The capture efficiencies increase as the source distance from the wall decreases. The gravitational effects on the particle deposition rate are also studied.