Analysis of isothermal flow of a Phan-Thien-Tanner fluid in a simplified model of a single-screw extruder

• Type: Article in International Scientific Journal
• Date: 2012

Authors

D. O. A. Cruz (Author) Other; F. T. Pinho (Author) FEUP

Journal

Title: Journal of Non-Newtonian Fluid Mechanics

Vol. 167

Pages: 95-105

ISSN: 0377-0257

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 11 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-002-H3Y

DOI: 10.1016/j.jnnfm.2011.10.007

Abstract (EN): An analytical solution is obtained for the flow in a simplified model of the shallow single screw extruder of polymer melts described by the simplified Phan-Thien-Tanner fluid with linear kernel function. To arrive at the analytical solution in the rectangular channel, both the effects of the channel curvature and of the spanwise coordinate are neglected in the flow (shallow channel/extruder) and the fluid properties are considered to be temperature-independent. The two Couette-Poiseuille flows are coupled via the nonlinear constitutive equation and the results are presented in dimensionless form as a function of all relevant dimensionless numbers. The results show that as shear-thinning is enhanced there is a decrease in the ratio between the strengths of the main and secondary flows and in the dimensionless pressure rise through the extruder.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11