Isothermal Axial Laminar Flow of Non-Newtonian Fluids in Concentric Annuli (PowerLaw and Sisko Fluids)

Ali Bahrami, Siroos Azizmohammadi, Mohammad-Reza Golkar Narenji, Vahid Taghikhani

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Abstract

In attention to industrial significance of non-Newtonian fluids, determination of flow behaviour under various operational conditions is desirable. In this paper the isothermal and axial laminar flow of non-Newtonian fluids (power-law and Sisko) in annuli have been analyzed. In the first step the governing equations (equation of motion and rheological model) are solved with using a numerical method for power-law fluid, and the volumetric flow rate values are obtained. Then by comparing with a semi-analytical method and the methods proposed by the other workers, the accuracy of results is confirmed. Finally this numerical method is applied to Sisko fluids and the results are presented.
Original languageUndefined/Unknown
Pages (from-to)271-278
Number of pages8
Journal Iranian polymer journal
Volume5
Issue number4
Publication statusPublished - 1996

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