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Original Articles

Theoretical modeling of fine-particle deposition in 3-dimensional bronchial bifurcations

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Pages 195-201 | Published online: 04 Jun 2010
 

Abstract

A theoretical model is developed for the prediction of the peak to average particle deposition flux in the human bronchial airways. The model involves the determination of the peak flux by a round-nose 2-dimensiortal bifurcation channel and the average deposition flux by a curved-tube model. The “hot-spot” effect for all generations in the human respiratory system is estimated. It is found that the peak deposition flux is higher than the average deposition flux by a factor ranging between 5 and 30, depending on the generation number. The importance of this peak to average deposition flux ratio on consideration of environmental safety studies is discussed.

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