La Houille Blanche
Number 1, Février 1992
|Page(s)||71 - 78|
|Published online||01 October 2009|
Loi de Poiseuille dans une conduite cylindrique obtenue par aplatissement uniforme d'un tube initialement elliptique
Poiseuille's law in cylindrical ducts obtained by flattening of elliptical tubes
Laboratoire de Mécanique Physique, U.F.R. de Sciences et Technologie, Université Paris 12, Val de Marne, Avenue du Général-de-Gaulle, F 94010 Créteil Cedex
Elastic tubes can colapse if the transmural pressure (internal pressure minus external pressure) is negative. A small viscous or inertial pressure drop accompanying fluid through the tube may be enough to cause a Large reduction in area. Such coupling offlow through an eLastic tube with coLLapse ofthe tube arises in veil/s or self-controlled flow rate andpressure regulator devices. The one-dimensional models of flow through these collapsibLe tubes involve the knowledge ofregular head loss in cylindricaL pipes with buckled cross-sections. ln this paper we determine the head loss in laminar flow for such pipes.
© Société Hydrotechnique de France, 1992
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