Fluid Mechanical Equilibrium Processes in a Multi-bifurcation Model

摘要

A comprehensive analysis of experimental and numerical results as to modeling the elastic behavior of a lung is presented. The main focus of this study is the dynamical distribution of the static pressure in a multiple branched network due to spontaneous volume change of its terminal units. The interaction between pressure and volume is the most essential feature in lung related science. Flow cases are performed in an idealized three-dimensional respiratory system under natural ventilation. The results demonstrate the dynamical spatial pressure expansion, the dominating oscillations, and a comparison of the compliance with high-frequency oscillation ventilation.