119 lines
4.3 KiB
C++
119 lines
4.3 KiB
C++
/*--------------------------------*- C++ -*----------------------------------*\
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| ========= | |
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| \\ / F ield | foam-extend: Open Source CFD |
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| \\ / O peration | Version: 3.2 |
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| \\ / A nd | Web: http://www.foam-extend.org |
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| \\/ M anipulation | |
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\*---------------------------------------------------------------------------*/
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FoamFile
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{
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version 2.0;
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format ascii;
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class dictionary;
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object viscoelasticProperties;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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/*
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From:
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VERBEETEN,W. M. H.; PETERS, G.W. M.; BAAIJENS, F. P. T. Differential constitutive
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equations for polymer melts: The extended pom-pom model. Journal of Rheology,
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SOR, v. 45, n. 4, p. 823-843, 2001.
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BASF Lupolen 1810H LDPE melt
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TABLE III. XPP parameters for fitting of the Lupolen 1810H melt.
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Tr = 150 °C, ni = 2/q, Activation energy: E0 = 58.6 kJ/mol.
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Maxwell parameters XPP model
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i G0i (Pa) l0bi(s) qi l0bi/l0si ai
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1 2.1662e4 1.0000e-1 1 3.5 0.350
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2 9.9545e3 6.3096e-1 2 3.0 0.300
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3 3.7775e3 3.9811e0 3 2.8 0.250
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4 9.6955e2 2.5119e1 7 2.8 0.200
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5 1.1834e2 1.5849e2 8 1.5 0.100
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6 4.1614e0 1.0000e3 37 1.5 0.005
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*/
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rheology
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{
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type multiMode;
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models
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(
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first
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{
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type XPP-DE;
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rho rho [1 -3 0 0 0 0 0] 850;
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etaS etaS [1 -1 -1 0 0 0 0] 0.0;
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etaP etaP [1 -1 -1 0 0 0 0] 2166.2;
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lambdaOb lambdaOb [0 0 1 0 0 0 0] 1.0e-1;
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lambdaOs lambdaOs [0 0 1 0 0 0 0] 0.0285714;
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alpha alpha [0 0 0 0 0 0 0] 0.35;
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q q [0 0 0 0 0 0 0] 1;
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}
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second
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{
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type XPP-DE;
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rho rho [1 -3 0 0 0 0 0] 850;
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etaS etaS [1 -1 -1 0 0 0 0] 0.0;
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etaP etaP [1 -1 -1 0 0 0 0] 6280.8913;
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lambdaOb lambdaOb [0 0 1 0 0 0 0] 6.3096e-1;
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lambdaOs lambdaOs [0 0 1 0 0 0 0] 0.21032;
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alpha alpha [0 0 0 0 0 0 0] 0.3;
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q q [0 0 0 0 0 0 0] 2;
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}
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third
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{
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type XPP-DE;
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rho rho [1 -3 0 0 0 0 0] 850;
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etaS etaS [1 -1 -1 0 0 0 0] 0.0;
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etaP etaP [1 -1 -1 0 0 0 0] 15038.605;
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lambdaOb lambdaOb [0 0 1 0 0 0 0] 3.9811e0;
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lambdaOs lambdaOs [0 0 1 0 0 0 0] 1.4218214;
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alpha alpha [0 0 0 0 0 0 0] 0.25;
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q q [0 0 0 0 0 0 0] 3;
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}
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fourth
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{
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type XPP-DE;
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rho rho [1 -3 0 0 0 0 0] 850;
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etaS etaS [1 -1 -1 0 0 0 0] 0.0;
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etaP etaP [1 -1 -1 0 0 0 0] 24354.126;
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lambdaOb lambdaOb [0 0 1 0 0 0 0] 2.5119e1;
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lambdaOs lambdaOs [0 0 1 0 0 0 0] 8.9710714;
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alpha alpha [0 0 0 0 0 0 0] 0.2;
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q q [0 0 0 0 0 0 0] 7;
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}
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fifth
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{
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type XPP-DE;
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rho rho [1 -3 0 0 0 0 0] 850;
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etaS etaS [1 -1 -1 0 0 0 0] 0.0;
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etaP etaP [1 -1 -1 0 0 0 0] 18755.707;
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lambdaOb lambdaOb [0 0 1 0 0 0 0] 1.5849e2;
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lambdaOs lambdaOs [0 0 1 0 0 0 0] 105.66;
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alpha alpha [0 0 0 0 0 0 0] 0.1;
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q q [0 0 0 0 0 0 0] 8;
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}
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sixth
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{
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type XPP-DE;
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rho rho [1 -3 0 0 0 0 0] 850;
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etaS etaS [1 -1 -1 0 0 0 0] 0.0;
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etaP etaP [1 -1 -1 0 0 0 0] 4161.4;
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lambdaOb lambdaOb [0 0 1 0 0 0 0] 1.0e3;
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lambdaOs lambdaOs [0 0 1 0 0 0 0] 666.66667;
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alpha alpha [0 0 0 0 0 0 0] 0.005;
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q q [0 0 0 0 0 0 0] 37;
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}
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);
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}
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// ************************************************************************* //
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