Two-layer flow of polymer melts in extruder die channel

International Scientific-technical Conference on Innovative Engineering Technologies, Equipment and Materials 2015

工业技术;机械制造;材料科学

Sharafutdinov, R.F.^1 ; Snigerev, B.A.^2 ; Galimov, E.R.^1 ; Galimova, N Ya^1

Kazan National Research Technical University Named of A. N. Tupolev-KAI, Russia^1

Institute of Mechanics and Engineering, Kazan Science Center, Russian Academy of Sciences, Russia^2

关键词: Distribution patterns;    Fluid velocities;    Momentum conservation equations;    Non-Newtonian fluids;    Numerical solution;    Rheological equation of state;    Rheological property;    Two-layer flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/134/1/012024/pdf
DOI  :  10.1088/1757-899X/134/1/012024

来源: IOP

【 摘 要 】

The paper discusses numerical modeling of two-layer flow of viscous non-Newtonian fluids in extruder die channels. Fluid motion is described by mass and momentum conservation equations supplemented by the rheological equation of state of a viscous non-Newtonian fluid according to the Carreau model. Technique of numerical solution of the problem based on the finite element method is presented. Distribution pattern of fluid velocities, pressure, stresses, positions of the interface in the two-layer flow depending on the rheological properties of a fluid and flow regimes is investigated.