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FLOW IN NATURAL AND DYNAMIC AIRWAY GEOMETRIES

Eike Hylla
Institute of Fluid Mechanics and Engineering Acoustics, Berlin Institute of Technology Muller-Breslau-Str. 8, Berlin, 10623, Germany

Octavian Frederich
Institute of Fluid Mechanics and Engineering Acoustics, Berlin Institute of Technology Muller-Breslau-Str. 8, Berlin, 10623, Germany

Frank Thiele
Hermann-Fottinger-Institute for Fluid Mechanics, Technical University of Berlin, 10623 Berlin, Germany

Sinopsis

In this paper numerical flow predictions within natural airway geometries are presented. The simulations are enabled using an Immersed Boundary approach, which is briefly described. The focus is set on analysing and discussing the flow physics in dynamic as well as in static healthy and injured porcine airways. The results show that the surface deformation has a significant influence on the flow phenomena. Due to negligible geometrical changes of the injured airways, only minor differences of the flow field could be observed, while comparing the results with the healthy airways.