Abstract
The deposition of aerosols with gravity acting in the direction of flow in a vertical circular tube was investigated numerically for developing, fully developed and uniform laminar flows. It was found that the deposition depends on the velocity ratio of terminal velocity to the average fluid velocity and decreases with increasing velocity ratio. The curves for the fractional penetration in a vertical tube at any velocity ratio were found to fall between that for uniform flow and that for fully developed flow due to diffusive effect alone when a proper dimensionless distance was used. Results for suspension flow in a vertical parallel-plate channel were also presented.
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