Titre :
|
Behavior of non-Newtenian fluids in the entry region of a pipe
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Auteurs :
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M. Collins ;
W. Schowalter
|
Type de document :
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article/chapitre/communication
|
Année de publication :
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1963
|
Format :
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p. 804-809
|
Langues:
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= Anglais
|
Catégories :
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PHYSIQUE ETAT DE LA MATIERE
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Mots-clés:
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FLUIDE NON NEWTONIEN
;
ECOULEMENT LAMINAIRE
;
PRESSION DES FLUIDES
;
TRANSFERT DE CHALEUR
;
VITESSE D'ECOULEMENT
;
TUYAU
|
Résumé :
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In the present paper principles of boundary-layer theory have been applied to determine the behavior of a non-Newtonian fluid in the entry region of a pipe. The results apply to laminar flow of viscous pseudoplastic fluids whose rheological behavior can be approximated by a power-law relation between shear stress and velocity gradient. The technique used in an extension of that previously describes by the authors. It is believed that the results provide a better description of velocity profiles in the entry region than has previously been available. The results should be helpful to persons interpreting pressure loss and heat transfer data taken under conditions such that the shape of the velocity profile is affected by proximity of the pipe entrance.
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Source :
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AIChE journal, vol. 9, n° 6
|