A Three-dimensional Numerical Model of a Critical Flow in a Collapsed Tube

Marc Thiriet 1
Abstract : The laminar steady flow is computed in a rigid pipe with wall configuration corresponding to a highly collapsed flexible tube conveying a critical flow (Reynolds number of 1210) to investigate the three-dimensional flow characteristics, especially in the distal segment. The tube shape, in both axial and transverse planes, is designed from ultra-sound measurements performed on the actual Starling resistor. The opposite walls in the distal tube segment come into contact; the tube then diverges to reach a circular uniform exit segment. The Navier-Stokes equations, associated to the classical boundary conditions, were solved by a finite element method (P1 - P1 bubble element). Where the opposite walls are into contact, the fluid flows through two small drop-shaped outer passages. In the downstream divergent, in- and up(bottom)ward jets are associated to flow separations and to flow characteristics behind an immersed stationary body.
Type de document :
[Research Report] RR-3867, INRIA. 2000
Liste complète des métadonnées

Contributeur : Rapport de Recherche Inria <>
Soumis le : mercredi 24 mai 2006 - 10:55:17
Dernière modification le : vendredi 25 mai 2018 - 12:02:05
Document(s) archivé(s) le : dimanche 4 avril 2010 - 23:22:36



  • HAL Id : inria-00072787, version 1



Marc Thiriet. A Three-dimensional Numerical Model of a Critical Flow in a Collapsed Tube. [Research Report] RR-3867, INRIA. 2000. 〈inria-00072787〉



Consultations de la notice


Téléchargements de fichiers