Interplay between geometry and flow distribution in an airway tree. - Laboratoire Jean-Alexandre Dieudonné Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2003

Interplay between geometry and flow distribution in an airway tree.

Résumé

Uniform flow distribution in a symmetric volume can be realized through a symmetric branched tree. It is shown here, however, by 3D numerical simulation of the Navier-Stokes equations, that the flow partitioning can be highly sensitive to deviations from exact symmetry if inertial effects are present. The flow asymmetry is quantified and found to depend on the Reynolds number. Moreover, for a given Reynolds number, we show that the flow distribution depends on the aspect ratio of the branching elements as well as their angular arrangement. Our results indicate that physiological variability should be severely restricted in order to ensure adequate fluid distribution through a tree.

Dates et versions

hal-00916486 , version 1 (10-12-2013)

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Benjamin Mauroy, M. Filoche, J. S. Andrade, B. Sapoval. Interplay between geometry and flow distribution in an airway tree.. Physical Review Letters, 2003, 90 (14), pp.148101. ⟨10.1103/PhysRevLett.90.148101⟩. ⟨hal-00916486⟩
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