Based on a simplified model, a theoretical expression for the deposition efficiency of fibers by interception at the bifurcation of a parent–daughter system was derived. In deriving this expression, the simultaneous effect of the velocity shear of the flow and Brownian rotation on fiber orientation was considered. Calculated deposition efficiencies in different airway generations of a Weibel lung model showed that the results obtained previously by Harris and Frazer in 1976 were valid only for small fibers. More accurate deposition results for large fibers are presented in this paper.
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Asgharian et al. (1989) studied this question.
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