db7fac3f24
git-svn-id: https://openfoam-extend.svn.sourceforge.net/svnroot/openfoam-extend/trunk/Core/OpenFOAM-1.5-dev@1731 e4e07f05-0c2f-0410-a05a-b8ba57e0c909
97 lines
3.5 KiB
Text
97 lines
3.5 KiB
Text
/*---------------------------------------------------------------------------*\
|
|
| ========= | |
|
|
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
|
|
| \\ / O peration | Version: 1.4 |
|
|
| \\ / A nd | Web: http://www.openfoam.org |
|
|
| \\/ M anipulation | |
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
FoamFile
|
|
{
|
|
version 2.0;
|
|
format ascii;
|
|
|
|
root "";
|
|
case "";
|
|
instance "";
|
|
local "";
|
|
|
|
class dictionary;
|
|
object viscoelasticProperties;
|
|
}
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * /
|
|
|
|
/*
|
|
From:
|
|
VERBEETEN, W. M. H.; PETERS, G. W. M.; BAAIJENS, F. P. T. Viscoelastic analysis
|
|
of complex polymer melt flows using the extended pom-pom model. Journal
|
|
of Non-Newtonian Fluid Mechanics, v. 108, n. 1-3, p. 301-326, 2002.
|
|
|
|
Table 1
|
|
Linear and non-linear parameters for fitting of the DSM Stamylan LD 2008 XC43 LDPE melt
|
|
i Maxwell parameters Exponential PTT
|
|
Gi (Pa) li (s) epi zei
|
|
1 7.2006e4 3.8946e-3 0.30 0.08
|
|
2 1.5770e4 5.1390e-2 0.20 0.08
|
|
3 3.3340e3 5.0349e-1 0.02 0.08
|
|
4 3.0080e2 4.5911e0 0.02 0.08
|
|
Tr = 170 C; activation energy: E0 = 48.2 kJ/mol; WLF-shift parameters: C1 = 14.3K, C2 = 480.8K.
|
|
*/
|
|
|
|
rheology
|
|
{
|
|
|
|
type multiMode;
|
|
|
|
models
|
|
(
|
|
first
|
|
{
|
|
type PTT-Exponential;
|
|
rho rho [1 -3 0 0 0 0 0] 850;
|
|
etaS etaS [1 -1 -1 0 0 0 0] 0.0;
|
|
etaP etaP [1 -1 -1 0 0 0 0] 280.43457;
|
|
lambda lambda [0 0 1 0 0 0 0] 3.8946e-3;
|
|
epsilon epsilon [0 0 0 0 0 0 0] 0.3;
|
|
zeta zeta [0 0 0 0 0 0 0] 0.08;
|
|
}
|
|
|
|
second
|
|
{
|
|
type PTT-Exponential;
|
|
rho rho [1 -3 0 0 0 0 0] 850;
|
|
etaS etaS [1 -1 -1 0 0 0 0] 0.0;
|
|
etaP etaP [1 -1 -1 0 0 0 0] 810.4203;
|
|
lambda lambda [0 0 1 0 0 0 0] 5.1390e-2;
|
|
epsilon epsilon [0 0 0 0 0 0 0] 0.2;
|
|
zeta zeta [0 0 0 0 0 0 0] 0.08;
|
|
}
|
|
|
|
third
|
|
{
|
|
type PTT-Exponential;
|
|
rho rho [1 -3 0 0 0 0 0] 850;
|
|
etaS etaS [1 -1 -1 0 0 0 0] 0.0;
|
|
etaP etaP [1 -1 -1 0 0 0 0] 1678.6357;
|
|
lambda lambda [0 0 1 0 0 0 0] 5.0349e-1;
|
|
epsilon epsilon [0 0 0 0 0 0 0] 0.02;
|
|
zeta zeta [0 0 0 0 0 0 0] 0.08;
|
|
}
|
|
|
|
fourth
|
|
{
|
|
type PTT-Exponential;
|
|
rho rho [1 -3 0 0 0 0 0] 850;
|
|
etaS etaS [1 -1 -1 0 0 0 0] 0.0;
|
|
etaP etaP [1 -1 -1 0 0 0 0] 1381.0029;
|
|
lambda lambda [0 0 1 0 0 0 0] 4.5911e0;
|
|
epsilon epsilon [0 0 0 0 0 0 0] 0.02;
|
|
zeta zeta [0 0 0 0 0 0 0] 0.08;
|
|
}
|
|
);
|
|
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|