Abstract
Numerical studies are carried out in order to investigate the phenomenon of contaminant removal from cavities in a horizontal channel using Eulerian-Lagrangian approach. The predictions are performed for three different aspect ratios of the cavity and three different upstream velocities resulting in Reynolds numbers of 50, 100 and 400, based on the channel height. Snapshots of streamline plots and distribution of solid particles for each cavity type for the aforementioned three Reynolds numbers are presented. Effect of cavity shape on flow structure and dynamics of particles within the cavity is discussed in detail. Calculated rate and percentage of removal for all cavity types reveal that low aspect ratio needs high Reynolds number while independence of Reynolds number for high aspect ratio for effective contaminant removal from cavities.
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