908 肺気道分岐管群内流れに関する数値シミュレーション(GS-2 バイオエンジニアリング(2))

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Understanding of the Deposition patterns and efficiencies of the inhaled particles like airborne pollutants which are considered as the cause of respiratory ailments and medicinal aerosols which are used in aerosol inhalation therapy is important for estimating the health risk of toxic ambient particles and for delivering drug aerosols to desired lung target areas. Deposition patterns and efficiencies of inhaled particles are strongly affected by airflow in the airways in which airflow rate is fast. In this study, the oscillating flow is numerically analyzed with FIDAP in three-dimensional human airway model at Re=1152 and Womersley number α=7.19. Results of this study show that there is a couple of vortexes at inspiratory flow in the daughter tubes and that there are two couples of vortexes at expiratory flow in the parent tube.
2004-03-17