Flow and deposition patterns in successive airway bifurcations

In the present work, the design of a symmetric double bifurcation is discussed, which is based on anatomical data. Applying the FIRE® (AVL-List, Graz, Austria) computational fluid dynamics (CFD) package for the solution of the Navier-Stokes and continuity equations, the flow field within the double bifurcation is obtained. In addition, deposition sites for 10 urn aerosol particles are calculated under consideration of the concomitant mechanisms of impaction, gravitational settling and interception.

[1]  E. Weibel.  Morphometry of the Human Lung , 1965, Springer Berlin Heidelberg.

[2]  T. Heistracher,et al.  The significance of secondary flows for localized particle deposition in bronchial airway bifurcations , 1995 .

[3]  Imre Balásházy,et al.  Deposition of aerosols in asymmetric airway bifurcations , 1995 .

[4]  Thomas Heistracher,et al.  Air Flow and Particle Deposition Patterns in Bronchial Airway Bifurcations: The Effect of Different CFD Models and Bifurcation Geometries , 1996 .

[5]  D E Olson,et al.  Physical models of the smaller pulmonary airways. , 1992, Journal of applied physiology.

[6]  Leon Gradoń,et al.  Deposition of inhaled aerosol particles in a generation of the tracheobronchial tree , 1990 .

[7]  Thomas Heistracher,et al.  Physiologically realistic models of bronchial airway bifurcations , 1995 .

[8]  Bahman Asgharian,et al.  Inertial and gravitational deposition of particles in a square cross section bifurcating airway , 1994 .

[9]  T. Heistracher,et al.  31.O.02 Simulation of airflow in a physiologically realistic airway bifurcation model , 1994 .

[10]  M. K. Chung,et al.  Characteristics of inertial deposition in a double bifurcation , 1996 .

[11]  D E Olson,et al.  Models of the human bronchial tree. , 1971, Journal of applied physiology.

[12]  T. Keith,et al.  Three-dimensional steady flow through a bifurcation. , 1990, Journal of biomechanical engineering.

[13]  Icrp.  Human Respiratory Tract Model for Radiological Protection , 1994 .