Additive method for determination of flowrate of viscoplastic fluids in annuli

• Autorzy: David J. , Filip P.
• Konferencja: Proceedings of the International Conference on Engineering Rheology ICER '99
• Języki publikacji: EN

Abstrakty

EN

The aim of this contribution is to present an additive method enabling a direct determination of axial flowrate for viscous (of power-law model) and viscoplastic (of Robertson-Stiff model) fluids in concentric annuli. This is based on addition of axial flowrates through individual partial concentric annuli forming the actual concentric annulus. The resulting relations for axial flowrate is possible to express in analytical forms without necessity of otherwise complicated derivations. The only numerical calculation consists in a determination of location of a zero shear stress for the original whole concentric annulus.

Słowa kluczowe

EN

annular flow; flowrate; Couette-Poiseuille flow; viscoplastic fluid; Robertson-Stiff model

PL

reologia

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: Applied Mechanics and Engineering
• Rocznik: 1999
• Tom: Vol. 4, no spec.
• Strony: 103--108
• Opis fizyczny: Bibliogr. 28 poz., wykr.

Twórcy

autor

David J.

autor

Filip P.

• Institute of Hydrodynamics, Acad.Sci.Czech Rep., Pod Patankou 5, 166 12 Prague 6, CZECH REPUBLIC