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Infant face and throat replicas are used in research laboratories to compare the effectiveness of different valved holding chamber and face mask designs. The use of soft face models is thought to provide a better representation of mask dead volume and face mask seal than hard face models....
Most current models for the deposition of aerosol particles in the human lung are based on a Lagrangian reference frame, which is ill-suited for modeling transient eects. Deposition models based on an Eulerian reference frame are much better at capturing instantaneous time-dependent eects, though...