Numerical study of fibre deposition in a human nasal cavity

摘要: Abstract The inhalation of toxic particles such as asbestos fibres through the nasal airway has been found to cause harmful damage respiratory system. This study made use CFD techniques investigate deposition fibrous in a human cavity. A 3D computational model was created from CT scans which provided framework flow and at constant rate 7.5 L/min. effects fibres’ elongated shape, density size were incorporated into empirical drag correlations fibre trajectories recorded Lagrangian tracking scheme. In general, good agreement right cavity an overprediction left major differences geometrical variations between subjects well cavities. dominant mechanism by inertial impaction, with majority depositing anterior region. It that had very low deposition, ≈ 14 % , independent length. comparison, carbon exhibited increases length increased. parameter ρ cross represents mass per unit used equate d ae for different lengths.