Fluid-dynamic optimality in the generation-averaged length-to-diameter ratio of the human bronchial tree.
Med Biol Eng Comput
; 45(11): 1071-8, 2007 Nov.
Article
en En
| MEDLINE
| ID: mdl-17653783
ABSTRACT
It is shown in this paper that the nearly constant length-to-diameter ratio observed with conducting airways of human bronchial tree can be explained based on the fluid dynamic optimality principle. In any branched tube there are two pressure loss mechanisms, one for wall friction in the tube section and the other for flow division in the branching section, and there exists an optimal length-to-diameter ratio which minimizes the total pressure loss for a branched tube in laminar flow condition. The optimal length-to-diameter ratio predicted by the pressure loss minimization shows an excellent agreement with the length-to-diameter ratios found in the human conducting airways.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bronquios
/
Modelos Anatómicos
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Med Biol Eng Comput
Año:
2007
Tipo del documento:
Article
País de afiliación:
Corea del Sur