TY - JOUR

T1 - Isothermal Axial Laminar Flow of Non-Newtonian Fluids in Concentric Annuli (PowerLaw and Sisko Fluids)

AU - Bahrami, Ali

AU - Azizmohammadi, Siroos

AU - Narenji, Mohammad-Reza Golkar

AU - Taghikhani, Vahid

PY - 1996

Y1 - 1996

N2 - 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.

AB - 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.

M3 - Article

VL - 5

SP - 271

EP - 278

JO - Iranian polymer journal

JF - Iranian polymer journal

SN - 1735-5265

IS - 4

ER -