Constructal theory of flow architecture of the lungs.

@article{Reis2004ConstructalTO,
  title={Constructal theory of flow architecture of the lungs.},
  author={A. H. Reis and Antonio F Miguel and M. Enver Aydin},
  journal={Medical physics},
  year={2004},
  volume={31 5},
  pages={1135-40}
}
Here we explain the reasons why we have a bronchial tree with 23 levels ofbifurcation. Based on Bejan's Constructal Principle we found that the best oxygen access to the alveolar tissues as well as carbon dioxide removal is provided by a flow structure composed of ducts with 23 levels of bifurcation (bronchial tree) that ends with spaces (alveolar sacs) from where oxygen diffuses into the tissues. The model delivers the dimensions of the alveolar sac, the total length of the airways, the total… CONTINUE READING

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