State of the‐art for extrudate swell of molten polymers: from fundamental understanding at molecular scale toward optimal die design at final product scale

D Tang, FH Marchesini, L Cardon… - Macromolecular …, 2020 - Wiley Online Library
Polymer extrudate swell is a rheological phenomenon taking place after polymer melt flow
emerges the die exit of extrusion equipment, due to flow redistributions and molecular stress …

[图书][B] Computational rheology

RG Owens, TN Phillips - 2002 - World Scientific
The following sections are included: Advances in Mathematical Modelling Dynamics of
Dilute Polymer Solutions The Rouse model Dumbbell models Closure Approximations …

Three dimensional numerical simulations of viscoelastic flows through planar contractions

SC Xue, N Phan-Thien, RI Tanner - Journal of Non-Newtonian Fluid …, 1998 - Elsevier
We present in this paper a fully three dimensional (3D) convergent numerical study of planar
viscoelastic contraction flows. A 3D finite volume method (FVM) with the primary variable …

A numerical study of the planar contraction flow of a viscoelastic fluid using the SIMPLER algorithm

JY Yoo, Y Na - Journal of non-newtonian fluid mechanics, 1991 - Elsevier
A finite volume technique has been introduced in an attempt to simulate the planar 4: 1
contraction flow of the Oldroyd B fluid on a non-uniform staggered grid system, which …

Natural convection combined with thermal radiation in a square cavity filled with a viscoelastic fluid

MA Sheremet, I Pop - International Journal of Numerical Methods for …, 2018 - emerald.com
Purpose The purpose of this paper is to study natural convective heat transfer and
viscoelastic fluid flow in a differentially heated square cavity under the effect of thermal …

Vortex behavior of the Oldroyd-B fluid in the 4-1 planar contraction simulated with the streamfunction–log-conformation formulation

R Comminal, JH Hattel, MA Alves… - Journal of Non-Newtonian …, 2016 - Elsevier
In this paper, we present numerical solutions of the Oldroyd-B fluid flowing through a 4: 1
planar contraction, for Weissenberg numbers (Wi) up to 20. The incompressible viscoelastic …

Numerical modelling of viscoelastic liquids using a finite-volume method

MS Darwish, JR Whiteman, MJ Bevis - Journal of non-newtonian fluid …, 1992 - Elsevier
A new staggered-grid, finite-volume method for the numerical simulation of isothermal
viscoelastic liquids is presented. The main features of this method are the use of a primitive …

Plane contraction flows of upper convected Maxwell and Phan-Thien–Tanner fluids as predicted by a finite-volume method

PJ Oliveira, FT Pinho - Journal of Non-Newtonian Fluid Mechanics, 1999 - Elsevier
A finite-volume (FV) procedure is applied to the prediction of two-dimensional (2-D) laminar
flow through a 4: 1 planar contraction of upper convected Maxwell (UCM) and simplified …

A purely hyperbolic model for unsteady viscoelastic flow

FR Phelan Jr, MF Malone, HH Winter - Journal of non-newtonian fluid …, 1989 - Elsevier
A purely hyperbolic model for unsteady, two-dimensional viscoelastic flow is developed. The
model uses a pressure-density relationship in the continuity equation to obtain a dynamic …

Numerical simulation of the planar contraction flow of a Giesekus fluid

HC Choi, JH Song, JY Yoo - Journal of Non-Newtonian Fluid Mechanics, 1988 - Elsevier
Finite difference calculation of the planar 4: 1 contraction flow of the Leonov-like fluid (ie, the
1-mole Giesekus model with mobility parameter α= 1 2) has been performed on a non …